Dell Dimension XPS D Series Reference And Troubleshooting Manual page 93

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If the network card is not detected, go to step 3.
If the network card does not pass all the tests, refer to Chapter 8, "Getting
Help," for instructions on obtaining technical assistance.
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a. Check the network card connector for physical damage.
b. Ensure that the cable is inserted properly.
c. Replace the patch cable or network cable from the wall jack to the computer.
d. If replacing the patch cable or network cable does not solve the problem, try
moving the computer to another location on the network.
e. If there is still a problem connecting to the network, ensure that the right
drivers are being used.
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A computer memory problem can be caused by a faulty dual in-line memory module
(DIMM) or a faulty system board. If you received an error message after making
changes in the system setup program, restore the original values and reboot the sys-
tem. If a random-access memory (RAM) error message appears, troubleshoot the
memory by following these steps:
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Checking Inside Your Computer 6-5