Repairing A Dropped Or Damaged Computer; Hardware Conflicts - Dell OptiPlex GX400 User Manual

1. Turn off the computer and peripherals, disconnect them from their electrical outlets, wait at least 5 seconds, and then
2. Let the computer dry for at least 24 hours. Make sure that it is thoroughly dry before you proceed.
3. Remove the AGP card brace.
4. Remove all expansion cards
NOTE: If your primary hard drive is connected to a drive controller card and not one of the system board EIDE connectors, leave the drive
controller card installed in the computer.
5. Replace the computer cover, reconnect the computer and peripherals to their electrical outlets, and turn them on.
Does the system have power?
Yes. Go to step 6.
No. Contact Dell for technical assistance.
6. Turn off the computer and peripherals, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover.
7. Reinstall all expansion cards.
8. Replace the AGP card brace.
9. Replace the computer cover, reconnect the computer and peripherals to their electrical outlets, and turn them on.
10. Run the System Board Devices test group in the
Did any of the diagnostics tests fail?
Yes. Contact Dell for technical assistance.
No. The problem is resolved.

Repairing a Dropped or Damaged Computer

CAUTION: Before you perform this procedure, see
Fill out the Diagnostics Checklist as you perform the following steps:
1. Turn off the computer and peripherals, disconnect them from their electrical outlets, wait at least 5 seconds, and then
2. Check all the expansion-card connections in the computer, and reseat any loose expansion cards.
3. Make sure that all cables are properly connected and that all components are properly seated in their connectors and sockets.
4. Replace the computer cover, reconnect the computer and peripherals to their electrical outlets, and turn them on.
5. Run the System Board Devices test group in the
Did any of the diagnostics tests fail?
Yes. Contact Dell for technical assistance.
No. The problem is resolved.

Hardware Conflicts

Hardware conflicts occur when the operating system detects multiple devices that are attempting to operate on the same system resources when those
resources cannot be shared between the devices.
Symptoms:
System hangs or locks up, particularly while using a specific device.
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Memory parity errors occur on parity-enabled systems.
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Noise or other problems from sound cards.
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Unintelligible characters printed on the printer.
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Mouse pointer hangs and will not move or moves in a stuttering fashion.
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Messages stating that the computer is not operating at maximum performance.
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Errors and crashes of applications for no apparent reason.
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Nothing displays on the video monitor.
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To resolve hardware conflicts:
Make sure the conflict is not a
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Remove any newly added hardware and contact the hardware manufacturer.
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See your operating system documentation.
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installed in the computer except a video expansion card.
Dell Diagnostics.
"Safety First— For You and Your
Dell Diagnostics.
software problem.
remove the computer
Computer."
remove the computer
cover.
cover.