D641SC-XB501 User Manual

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The arrow keys on the number key pad are not working.

Check if the Number Lock LED is oﬀ. 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 oﬀ if you want to use the arrow keys on the number key pad.

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.

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.

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.

54 Chapter 6: Troubleshooting

ENGLISH

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User Manual - Page 54