User's Manual

164 Solving Problems
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17 Run the RAM test group in the Dell Diagnostics.
Did any of the diagnostics tests fail?
Yes. Contact Dell for technical assistance.
No. Go to step 18.
18 Turn off the computer and devices, disconnect them from their
electrical outlets, and wait 10 to 20 seconds.
19 Lay the computer on its right side.
20 Open the computer cover.
21 Reinstall one of the expansion cards that you removed previously, and
repeat step 14 through step 17.
Did any of the diagnostics tests fail?
Yes. The expansion card you just reinstalled is faulty and needs to be
replaced.
No. Repeat step 18and step 21 with a different expansion card. Go to
step 22.
22 If you have reinstalled all the expansion cards and the problem is not
resolved, contact Dell for technical assistance.
Network Problems
Basic Checks:
• Check the network activity lights to see if the computer is
communicating with the network.
• If you are using a modem and a network adapter, ensure that the
modem cable is not connected to the network adapter.
• Disconnect the network cable from the computer and check the cable
connector for bent or broken pins. Check for damaged or frayed cables.
• If the cable is not damaged, ensure that it is firmly connected to the
computer.
• Ensure that a hardware conflict does not exist between devices.
• Enter system setup and ensure that the appropriate network
operations settings are configured correctly.