3Com 3CR990 manual Troubleshooting, Accessing the, 3Com KnowledgeBase, the Installation

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TROUBLESHOOTING

Accessing the	To access a database of technical information that can help you diagnose and
3Com KnowledgeBase	solve 3CR990 NIC installation, configuration, and upgrade problems
	Go to: http://www.knowledgebase.3com.com.
Troubleshooting	Follow these troubleshooting tips if you have trouble installing or configuring your
the Installation	NIC, or if the NIC installation fails.

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

■ Make sure that the NIC is correctly installed in a PCI slot. Check for specific hardware problems, such as broken traces or loose or broken solder connections.

Go to: NIC Installation.

■ Inspect all cables and connections. Check the length and rating of the cable. Make sure that the cable segment is compliant with the requirements for a 3CR990 NIC.

Go to: Cabling Requirements.

■ Make sure that you are using the latest BIOS for your PC. If your BIOS has not been upgraded in the previous 12 months, contact your PC manufacturer to obtain the current version of your BIOS software.

■ Run the NIC diagnostics tests.

Go to: Running Diagnostics Programs.

■ Replace the failed NIC with a working NIC and run the diagnostics tests again, using the same option settings as those used on the failed NIC. If the working NIC passes all tests, the original NIC is probably defective. For information on product repair

Go to: Returning Products for Repair.