3com 3C990B-TX-M Manual De Usuario

8      Troubleshooting the NIC

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You can reinstall the 3Com NIC Diagnostics program after completing this procedure. See 
“Installing the 3Com NIC Diagnostics Program” on page 29 for instructions.

1 Insert the EtherCD in the CD-ROM drive.

The EtherCD Welcome screen appears.

2 Click NIC Software.

3 Click Installation Utilities.

4 Click Undo Broken Installation and Uninstall.

You are given the option to Proceed or go Back. Before proceeding, write down your 
network settings so that you can refer to your notes when you reinstall the NIC.

5 Click Proceed.

The uninstall process begins. A warning message appears.

6 Click OK.

A message appears stating that all of the 3C990B NICs have been removed from 
your system.

7 Click OK.

8 Exit the EtherCD, and then exit Windows.

9 Restart the computer.

10 Install the network driver, as described in “Installing the Network Driver Using the 

If you are prompted for 3Com files when Windows restarts, open the drop-down box 
and select the following path:

\options\cabs

See Chapter 3, “Installing NIC Drivers and Diagnostics For Windows,” for information 
about confirming that the NIC and driver are properly installed.

After the driver has been reinstalled, reinstall the 3Com NIC Diagnostics program. See 
“Installing the 3Com NIC Diagnostics Program” on page 29 for instructions.

If you encounter problems with using the NIC or connecting to the network, check the 
table below for troubleshooting tips.

CAUTION: Before inserting or removing the NIC from the computer, turn the 
computer power off and unplug the power cord.

Check the NIC 
hardware installation

Make sure that the NIC is installed correctly in a PCI slot. Check for specific 
hardware problems, such as broken traces or loose or broken solder 
connections. See “Installing and Connecting the NIC” on page 18.

Check the NIC 
software installation

Make sure that the NIC software is installed correctly in the computer. 

See Chapter 3, “Installing NIC Drivers and Diagnostics For Windows,” for 
information about confirming that the NIC and driver are properly installed.