TROUBLE.TXT Driver File Contents (v72d3com.exe)

                       3Com (R) Corporation
                  3C90x EtherLink PCI NIC Family
                   Troubleshooting Information


If the NIC diagnostic tests fail using the 3Com Configuration and 
Diagnostic program for DOS, the NIC may not be defective. Check the 
following:

1.  Make sure that the NIC is completely seated in its slot.  Review
    the installation instructions in the NIC's user guide.

2.  If you are running the Group 2 test, make sure that the NIC is
    securely connected to a loopback plug or to a properly cabled network.
    Running Group 2 tests while connected to an active network can cause
    intermittent failures.  These failures can be avoided by using a
    loopback plug or by connecting to an inactive network on which only 
    the computer being tested is operating.

3.  If you are running the Group 3 test, make sure that the NIC is
    securely connected to a properly cabled network and that an echo 
    server is set up and running on the network.

4.  If you are configuring the I/O base address, interrupt request level,
    or boot PROM base address, make sure that the settings you choose for
    these parameters do not conflict with any other peripheral or software
    program installed in the computer.  For a list of system resources
    commonly used by other peripherals, select Commonly Used Interrupt
    and I/O Base Addresses from the Configuration and Diagnostic submenu.

5.  Make sure that the configuration setting for the transceiver type is
    correct.

6.  If you installed a twisted-pair NIC in your PC, check the LED on
    the backplate of the NIC.  The LED should be checked only during or 
    after the diagnostic tests have been run.  The LED lights when 
    there is a correct and active connection between the NIC and the hub.
    The LED flashes if the polarity of the connection is reversed.

7.  The slot in the computer may be defective.  Install the NIC in
    another slot and run the tests again.

8.  The computer in which the NIC is installed may be defective.
    Install the NIC in a known functioning computer and run the tests
    again.

9.  The components of the loopback plug you are using may be defective.
    Try a different loopback plug.

10. Replace the failed NIC with a known working NIC with the same
    configuration.  Run the tests again.  If the second NIC fails,
    something is probably wrong with the test environment, not with
    the NIC.

                 (%VER  TROUBLE.TXT - Troubleshooting v5.1.0)
Download Driver Pack

How To Update Drivers Manually

After your driver has been downloaded, follow these simple steps to install it.

  • Expand the archive file (if the download file is in zip or rar format).

  • If the expanded file has an .exe extension, double click it and follow the installation instructions.

  • Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.

  • Find the device and model you want to update in the device list.

  • Double-click on it to open the Properties dialog box.

  • From the Properties dialog box, select the Driver tab.

  • Click the Update Driver button, then follow the instructions.

Very important: You must reboot your system to ensure that any driver updates have taken effect.

For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.

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