XPS 15 Service Manual Regulatory Model: P56F Regulatory Type: P56F001 November 2020 Rev.
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2016-2019 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Chapter 1: Before working inside your computer........................................................................... 8 Before you begin .................................................................................................................................................................8 Safety instructions.............................................................................................................................................................. 8 Recommended tools..
Procedure............................................................................................................................................................................25 Post-requisites...................................................................................................................................................................25 Chapter 13: Removing the solid-state drive (full-length)............................................................. 26 Prerequisites.............
Procedure.............................................................................................................................................................................41 Post-requisites....................................................................................................................................................................41 Chapter 25: Removing the system board..................................................................................... 42 Prerequisites......
Procedure............................................................................................................................................................................60 Post-requisites...................................................................................................................................................................60 Chapter 37: Removing the antenna cover..................................................................................... 61 Prerequisites.......
Entering BIOS setup program........................................................................................................................................ 75 System setup options.......................................................................................................................................................75 System and setup password...........................................................................................................................................
1 Before working inside your computer NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Before you begin 1. Save and close all open files and exit all open applications. 2. Shut down your computer. Click Start > Power > Shut down. NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down instructions. 3. Disconnect your computer and all attached devices from their electrical outlets. 4.
Recommended tools The procedures in this document may require the following tools: ● ● ● ● Phillips screwdriver #0 Phillips screwdriver #1 Torx #5 (T5) screwdriver Plastic scribe Screw list The following table provides the list of screws that are used for securing different components to the computer. Table 1.
Table 1. Screw list (continued) Component Secured to Screw type Quantity Display hinges Palm-rest assembly M2.
2 After working inside your computer CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer. 1. Replace all screws and ensure that no stray screws remain inside your computer. 2. Connect any external devices, peripherals, or cables you removed before working on your computer. 3. Replace any media cards, discs, or any other parts that you removed before working on your computer. 4. Connect your computer and all attached devices to their electrical outlets. 5.
3 Removing the base cover NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Close the display, and turn the computer over. 2.
Figure 2. Prying the base cover off the computer base a.
4 Replacing the base cover NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Place the base cover on the palm-rest assembly and snap it into place. 2.
5 Removing the battery (half-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. Procedure 1.
6 Replacing the battery (half-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Align the screw holes on the battery with the screw holes on the palm-rest assembly.
7 Removing the battery (full-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the base cover. Procedure 1.
8 Replacing the battery (full-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Align the screw holes on the battery with the screw holes on the palm-rest assembly.
9 Removing the hard drive NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive.
Figure 6. Disconnecting the hard-drive cable from the system board a. pull tab b. hard-drive assembly 5. Disconnect the hard-drive interposer from the hard-drive assembly. Figure 7. Disconnecting the hard-drive interposer from the hard-drive assembly a. hard-drive assembly b. hard-drive interposer 6. Remove the hard-drive covers away from the hard drive.
Figure 8. Removing the hard-drive cover a. hard-drive covers (2) b.
10 Replacing the hard drive NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive. Procedure 1.
11 Removing the solid-state drive (half-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2.
Figure 10. Removing the solid-state drive bracket a. solid-state drive bracket b. screw c. solid-state drive 4. Lift the solid-state drive off the solid-state drive bracket.
12 Replacing the solid-state drive (half-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1.
13 Removing the solid-state drive (full-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2.
Figure 12. Removing the thermal pad a. thermal pad b.
14 Replacing the solid-state drive (full-length) NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Adhere the thermal pad to the solid-state drive. 2.
15 Removing the speakers NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2. Remove the battery (half-length) or the battery (full-length).
16 Replacing the speakers NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Using the alignment posts, place the speakers on the palm-rest assembly. 2.
17 Removing the wireless card NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2. Remove the battery (half-length) or the battery (full-length).
18 Replacing the wireless card NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure CAUTION: To avoid damage to the wireless card, do not place any cables under it. 1.
Post-requisites 1. Replace the battery (half-length) or the battery (full-length). 2. Replace the base cover.
19 Removing the fans NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2. Remove the battery (half-length) or the battery (full-length).
Figure 16. Removing the video fan 1. routing guide 3. tape 5. video fan (JFAN_2) 2. touch-screen cable (optional) 4. fan cable 6. screws (2) 7. Remove the two screws (M2x4) that secure the processor fan (JFAN_1) to the system board. 8. Note the routing of the display cable and remove the cable from the processor fan (JFAN_1). 9. Disconnect the processor fan (JFAN_1) cable from the system board. 10. Lift the processor fan (JFAN_1) away from the palm-rest assembly.
Figure 17. Removing the processor fan 1. routing guide 3. fan cable 5. screws (2) 36 Removing the fans 2. display cable 4.
20 Replacing the fans NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Align the screw holes on the processor fan (JFAN_1) with the screw holes on the palm-rest assembly.
21 Removing the heat-sink assembly NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: The heat sink may become hot during normal operation.
22 Replacing the heat-sink assembly NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Incorrect alignment of the heat sink can damage the system board and processor.
23 Removing the memory modules NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2. Remove the battery (half-length) or the battery (full-length).
24 Replacing the memory modules NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Align the notch on the memory module with the tab on the memory-module slot. 2.
25 Removing the system board NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board.
Figure 21. Disconnecting the display cable a. display-cable bracket b. screw c. display cable 4. Disconnect the power-adapter port cable, speaker cable, keyboard-control board cable, touch-pad cable and fingerprint reader cable from the system board. 5. Peel off the tape and disconnect the touch-screen cable from the system board. Figure 22. Disconnecting the cables 1. power-adapter port cable 3. keyboard-control board cable 5. fingerprint reader cable 2. speaker cable 4. touch-pad cable 6.
7. tape 6. Remove the five screws (M2x4) that secure the system board to the palm-rest assembly. 7. Lift the system board off the palm-rest assembly. CAUTION: Hold the system board from the center. The circuitry on the sides is delicate and can be easily damaged if the system board is held in any other way. Figure 23. Removing the system board a. system board b. screws (5) c.
26 Replacing the system board NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board.
1. Align the screw holes on the system board with the screw holes on the palm-rest assembly. 2. Replace the five screws (M2x4) that secure the system board to the palm-rest assembly. 3. Adhere the tape and connect the touch-screen cable to the system board. 4. Connect the power-adapter port cable, speaker cable, keyboard-control board cable, touch-pad cable and fingerprint reader to the system board. 5. Connect the display cable to the system board. 6.
27 Removing the audio daughter-board NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2.
b.
28 Replacing the audio daughter-board NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1.
29 Removing the coin-cell battery NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Removing the coin-cell battery resets the BIOS setup program’s settings to default.
c.
30 Replacing the coin-cell battery NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Adhere the coin-cell battery to the system board. 2.
31 Removing the keyboard NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2. Remove the battery (half-length) or the battery (full-length). 3.
Figure 27. Removing the screws from the keyboard a. screws (31) b. keyboard c.
32 Replacing the keyboard NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Align the screw holes on the keyboard with the screw holes on the palm-rest assembly. 2.
33 Removing the display assembly NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2.
6. Remove the six screws (M2.5x5) that secure the display hinges to the palm-rest assembly. 7. Carefully lift the display assembly from the palm-rest assembly Figure 29. Removing the screws that secure the display hinges to palm-rest assembly 1. palm-rest assembly 3. display hinges (2) 2. screws (6) 4. display assembly 8. Carefully place the display assembly on a clean, flat surface. Figure 30. Display assembly a.
34 Replacing the display assembly NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1.
35 Removing the power-adapter port NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2.
36 Replacing the power-adapter port NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Place the power-adapter port into the slot on the palm-rest assembly. 2.
37 Removing the antenna cover NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the base cover. 2. Remove the battery (half-length) or the battery (full-length).
Figure 33. Removing the antenna cover a. display assembly b.
38 Replacing the antenna cover NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Replace the antenna cover on the display assembly. 2.
39 Removing the display hinges NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites NOTE: These instructions are applicable only for laptops with a non-touchscreen display. 1.
Figure 35. Removing the display hinges a. screws (6) b.
40 Replacing the display hinges NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Align the screw holes on the display hinges with the screw holes on the display assembly.
41 Removing the antenna module NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites NOTE: These instructions are applicable only for laptops with a non-touchscreen display. 1.
42 Replacing the antenna module NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure 1. Align the screw holes on the antenna module with the screw holes on the display assembly.
43 Removing the palm-rest assembly NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance.
44 Replacing the palm-rest assembly NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the palm-rest assembly on a clean and flat surface. Post-requisites 1.
45 Downloading drivers Downloading the audio driver 1. Turn on your computer. 2. Go to www.dell.com/support. 3. Click Product Support, enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model. 4. Click Drivers & Downloads > Find it myself. 5. Scroll down the page and expand Audio. 6. Click Download to download the audio driver for your computer. 7.
Downloading the Wi-Fi driver 1. Turn on the computer. 2. Go to www.dell.com/support. 3. Click Product support, enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model. 4. Click Drivers & downloads > Find it myself. 5. Scroll down the page and expand Network. 6. Click Download to download the Wi-Fi driver for your computer. 7.
6. Click Download to download the network driver for your computer. 7. Save the file, and after the download is complete, navigate to the folder where you saved the network driver file. 8. Double-click the network driver file icon and follow the instructions on screen.
46 System setup NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. Boot Sequence Boot Sequence allows you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive).
Use the BIOS Setup program for the following purposes: ● Get information about the hardware installed in your computer, such as the amount of RAM and the size of the hard drive. ● Change the system configuration information. ● Set or change a user-selectable option, such as the user password, type of hard drive installed, and enabling or disabling base devices. Entering BIOS setup program 1. Turn on (or restart) your computer. 2.
Table 3. System setup options—System information menu (continued) General-System Information Processor L2 Cache Displays the processor L2 Cache size. Processor L3 Cache Displays the processor L3 Cache size. HT Capable Displays whether the processor is hyper-threading (HT) capable. 64-Bit Technology Displays whether 64-bit technology is used. Device Information M.2 SATA Displays the M.2 SATA device information. Primary Hard Drive Displays the primary hard drive. M.2 PCIe SSD-0 Displays the M.
Table 4. System setup options—System configuration menu (continued) System Configuration Enable Thunderbolt Boot Support Enable or disable booting from USB mass storage devices connected to the thunderbolt ports. Always Allow Dell Docks Enable or disable the computer to always allow the Dell docking stations. Enable Thunderbolt (and PCIe behind TBT) Pre-boot Enable or disable the Thunderbolt (and PCIe behind Thunderbolt) preboot.
Table 7. System setup options—Secure boot menu Secure Boot Secure Boot Enable Enable or disable the secure boot feature. Expert Key Management Expert Key Management Enable or disable expert key management. Custom Mode Key Management Select custom values for expert key management. Table 8. System setup options—Intel Software Guard Extensions menu Intel Software Guard Extensions Intel SGX Enable Enable or disable Intel Software Guard Extensions (SGX).
Table 8. System setup options—Intel Software Guard Extensions menu (continued) Intel Software Guard Extensions Default: Enabled. Keypad (Embedded) Enable or disable the keypad that is embedded in the internal keyboard. Num lock Enable Enable or disable the numeric lock—numlock. Default: Enabled. Fn Key Emulation Enable or disable the function (fn) key emulation. Fn Lock Options Enable or disable the function (fn) lock mode. Fast-boot Enable to set the speed of the boot process. Default: Thorough.
Table 14. System setup options—SupportAssist System Resolution SupportAssist System Resolution Auto OS Recovery Threshold Control the automatic boot flow for the SupportAssist System Resolution console and for the Dell OS Recovery tool. SupportAssist OS Recovery Enable or disable the boot flow for the SupportAssist OS Recovery tool in the event of certain system errors. System and setup password You can create a system password and a setup password to secure your computer.
NOTE: If you change the System and/or Setup password, re-enter the new password when promoted. If you delete the System and/or Setup password, confirm the deletion when promoted. 5. Press Esc and a message prompts you to save the changes. 6. Press Y to save the changes and exit from System Setup. The computer reboots. Clearing forgotten passwords Contact Dell technical support to clear the forgotten passwords, see www.dell.com/contactdell. Clearing CMOS settings 1. Remove the base cover. 2.
47 Troubleshooting Drain residual flea power (perform hard reset) Flea power is the residual static electricity that remains in the computer even after it has been powered off and the battery is removed. For your safety, and to protect the sensitive electronic components in your computer, you are requested to drain residual flea power before removing or replacing any components in your computer.
Flashing the BIOS You may need to flash (update) the BIOS when an update is available or when you replace the system board. Follow these steps to flash the BIOS: 1. Turn on your computer. 2. Go to www.dell.com/support. 3. Click Product support, enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model. 4. Click Drivers & downloads > Find it myself. 5.
Table 15. Diagnostics Light Pattern Problem description 2,1 CPU failure 2,2 System board: BIOS and ROM failure 2,3 No memory or RAM detected 2,4 Memory or RAM failure 2,5 Invalid memory installed 2,6 System board or chipset error 2,7 LCD failure 3,1 CMOS battery failure 3,2 PCI/video card failure 3,3 Recovery image not found 3,4 Recovery image found but invalid The computer may emit a series of beeps during start-up if the errors or problems cannot be displayed.
48 Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 16. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell Tips Contact Support In Windows search, type Contact Support, and press Enter. Online help for operating system www.dell.com/support/windows www.dell.
