Testing Apple Built in ethernet adapter

My powermac G4 400 is connected to a small network via hub with a G3 and laser printer, after  I had a crash the machine would not boot and after a while I discovered it started fine when the ethernet cable was removed, I tried different cables but the same problem ! Does this mean the nic has broken? how can I test it?
AndyJJAsked:
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weedCommented:
What OS is the machine running? Have you run DiskWarrior or Norton Disk Doctor lately?
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lesouefCommented:
I had this once! After a crash, it was trying to boot from a network volume. If you disconnect, it is using the local disk.
So, remove cable, boot, control panel / startup/ select local volume. And that should be it.
(os9 only)
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