Document #: 07391

3C905 - Windows NT 4.0 srvr - Second NIC locks up during diagnostics

Problem: Installed a second 3C905 NIC in slot 2 in a Digital Prioris XL 5133. Opened 3Com tray icon to run Self test
(3Com windows diagnostics) and the system locked up.

Solution: Restart machine and access BIOS. Refer to PC documentation for BIOS access command.
Change Slot 2 from "busmastering disabled" to "busmastering enabled".
Assign the NIC an available IRQ (such as 10,11 12, or 5. Avoid IRQ 9).
Save changes and exit.
Restart NT

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