Dell Precision 620 User Manual page 89

3. Remove the AGP card brace according to the instructions in
4. Verify that each expansion card is firmly seated in its connector. If any expansion cards are loose, reseat them.
5. Verify that any cables are firmly connected to their corresponding connectors on the expansion cards. If any cables appear loose, reconnect
them.
For instructions on which cables should be attached to specific connectors on an expansion card, see the expansion card's documentation.
6. Remove all expansion cards
7. Replace the computer cover, reconnect the system to an electrical outlet, and turn it on.
8. Insert the Dell Precision ResourceCD into the CD-ROM drive, reboot the system, and run the RAM test group in the
If the tests complete successfully, proceed to step 9. If any of the tests fail, see
assistance.
9. Turn off the system, disconnect it from the electrical outlet, and remove the computer cover.
10. Reinstall one of the expansion cards that you removed previously, and repeat steps 6 and 7.
If any of the tests fail, the expansion card you just reinstalled is faulty and needs to be replaced. If the tests complete successfully, repeat
steps 8 and 9 with another expansion card.
If you have replaced all the expansion cards removed previously and the expansion card problem is not resolved, see
information on obtaining technical assistance.
Troubleshooting System Memory
NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby
power LED on the system board has turned off. For the location of this LED, see
A computer memory problem can be a faulty memory module or a faulty system board. If a random-access memory (RAM) error message
appears, the computer probably has a memory problem.
When you turn on or reboot the system, the Caps Lock and Scroll Lock indicators on the keyboard should flash momentarily and then turn off. If the
Num Lock option in System Setup
Abnormal operation of these indicators can result from a defective memory module. To troubleshoot system memory, perform the following steps:
1. Turn on the system, including any attached peripherals.
CAUTION: Before you remove the computer cover, see
2. If an error message indicates invalid system configuration information,
amount of memory displayed does not match the amount of memory installed, turn off the computer, disconnect it from the electrical outlet,
remove the computer cover, and reseat the memory modules in their sockets.
3. Replace the computer cover, reconnect the system to an electrical outlet, and turn it on.
4. If the problem is not resolved, insert the Dell Precision ResourceCD into the CD-ROM drive, reboot the system, and run the RAM test group
in the Dell Diagnostics.
If the Dell Diagnostics identifies a faulty memory module,
faulty, or if the Dell Diagnostics does not identify the cause of the problem and the problem is still not resolved, see
on obtaining technical assistance.
Troubleshooting the Video Subsystem
NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby
power LED on the system board has turned off. For the location of this LED, see
Troubleshooting video problems involves determining which of the following is the source of the problem: the monitor, the monitor interface cable,
or the integrated video subsystem.
Before attempting to troubleshoot the video subsystem, perform the procedure found in
the monitor is the source of the problem.
If the monitor is not at fault, perform the following steps:
except the video card.
is set to On, the Num Lock indicator should flash momentarily and then remain on; otherwise, it should turn off.
replace that memory
"Removing and Replacing the AGP Card
"Getting Help" for information on obtaining technical
Figure 1
"Safety First—For You and Your
enter System Setup and check the System Memory option. If the
module. If the Dell Diagnostics determines that the system board is
Figure 1
"Troubleshooting the
Brace."
Dell Diagnostics.
"Getting Help" for
in "Installing System Board Options."
Computer."
"Getting Help" for instructions
in "Installing System Board Options."
Monitor" to determine whether or not