User’s Manual

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The arrow keys on the number key pad are not working.
Check if the Number Lock LED is o. When the Number Lock LED is on, the keys on
the number key pad are used to input numbers only. Press the Number Lock key to
turn the LED o if you want to use the arrow keys on the number key pad.
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No display on the monitor.
• Check if the monitor is powered on.
• Ensure that your monitor is properly connected to the video output port on your
computer.
• If your computer comes with a discrete graphics card, ensure that you connect your
monitor to a video output port on the discrete graphics card.
• Check if any of the pins on the monitor video connector is bent. If you discover bent
pins, replace the monitor video connector cable.
• Check if your monitor is plugged to a power source properly.
• Refer to the documentation that came with your monitor for more troubleshooting
information.
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When using multiple monitors, only one monitor has display.
• Ensure that the both monitors are powered on.
• During POST, only the monitor connected to the VGA port has display. The dual
display function works only under Windows.
• When a graphics card is installed on your computer, ensure that you connect the
monitors to the output port on the graphics card.
• Check if the multiple displays settings are correct.
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My computer cannot detect my USB storage device.
• The rst time you connect your USB storage device to your computer, Windows
automatically installs a driver for it. Wait for a while and go to My Computer to
check if the USB storage device is detected.
• Connect your USB storage device to another computer to test if the USB storage
device is broken or malfunctions.
48 Chapter 6: Troubleshooting
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