The usual response: check your system log
PCMCIA Network Adapter Issues
NetGear FA510 ethernet card not recognized (Michael Bletzinger)
Date: 2000, Jan 06
From: David Hinds <email@example.com>
System log messages might be useful. A comparison of log messages
between the working and non-working systems would be even more useful.
Do you have other cards that do (or do not) work?
Here are the logs by Michael Bletzinger, 2000, Jan 06
Changing the address worked by Michael Bletzinger, 2000, Jan 10
to: "The usual response: check your system log"