S olv ing Pr oble m s 139No. You may have a faulty expansion card. Go to step 8.8 Turn off the computer and peripherals, disconnect them from theirelectrical outlets, wait at least 5 seconds, and then remove thecomputer cover.9 Remove all expansion cards except the video card.NOTE: If your primary hard drive is connected to a drive controller cardand not one of the system board enhanced integrated drive electronics(EIDE) connectors, leave the drive controller card installed in thecomputer.10 Replace the computer cover, reconnect the computer and peripheralsto their electrical outlets, and turn them on.11 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 12.12 Turn off the computer and peripherals, disconnect them from theirelectrical outlets, wait at least 5 seconds, and then remove thecomputer cover.13 Reinstall one of the expansion cards that you removed previously, andrepeat step 10 and step 11.Did any of the diagnostics tests fail?Yes. The expansion card you just reinstalled is faulty and needs to bereplaced.No. Repeat step 12 and step 13 with a different expansion card. Go tostep 14.14 If you have replaced all the expansion cards and the problem is notresolved, contact Dell for technical assistance.Network ProblemsBasic Checks:• Check the network activity indicators to see if the computer iscommunicating with the network.