Manual

The front panel also incorporates two USB 2.0 connectors. See Figure2-1.
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Diagnostics Indicator Codes
The four diagnostic indicator lights on the system front panel display error codes during system startup. Table2-2 lists the causes and possible corrective
actions associated with these codes. A highlighted circle indicates the light is on; a non-highlighted circle indicates the light is off.
Table 2-2.DiagnosticIndicatorCodes
Back-Panel Indicators and Features
Green blinking
The system is in a low power state. Check the diagnostic indicators to see if the specific problem is identified. See Table2-
2.
Diskette drive
Green blinking
Indicates diskette-drive activity.
Hard drive
Green blinking
Indicates hard-drive activity.
LAN link
Solid green
Indicates network is linked.
NOTE: Once the system completes POST, all diagnostic lights will be OFF.
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Code

Causes

Corrective Action
Possible processor failure.
See "Troubleshooting the Microprocessor" in "Troubleshooting Your System."
Memory failure.
See "Troubleshooting System Memory" in "Troubleshooting Your System."
Possible expansion card failure.
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See "Troubleshooting Expansion Cards" in "Troubleshooting Your System."
Possible video failure.
See "Getting Help."
Diskette drive or hard drive failure.
Ensure that the diskette drive and hard drive are properly connected. See "Installing Drives"
for information on the drives installed in your system.
Possible USB failure.
See "Troubleshooting a USB Device" in "Troubleshooting Your System."
No memory modules detected.
See "Troubleshooting System Memory" in "Troubleshooting Your System."
System board failure.
See "Getting Help."
Memory configuration error.
See "Troubleshooting System Memory" in "Troubleshooting Your System."
Possible system board resource and/or
system board hardware failure.
See "Troubleshooting IRQ Assignment Conflicts" in "Troubleshooting Your System." If the
problem persists, see "Getting Help."
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Possible system resource configuration
error.
See "Troubleshooting Your System."
If the problem persists, see "Getting Help."
Other failure.
Ensure that the diskette drive, optical drive, and hard drives are properly connected. See
"Troubleshooting Your System" for the appropriate drive installed in your system.
If the problem persists, see "Getting Help."
BIOS checksum failure detected; system is
in recovery mode.
Ensure that all network cards and connections are functioning properly. See "Troubleshooting
Your System."
If the problem persists, see "Getting Help."
The system is in a normal operating
condition after POST.
Information only.