[Ham-Computers] Boot and reboot

[K3ASI]

I have had a Compaq, 500 mhz, running Win2000, computer running Echolink 
for over a year now. Last week the HD died so I replaced it with 80 gig 
HD. Installed Win2000 with no problems and shut it down. The next day I 
turned it on and it would boot, then reboot, boot, and reboot, on and on. 
I reformated the HD, installed Win2000 again and it was ok. It ran 6 
hours and then started to shut down and reboot, and boot and reboot.
This was a good running computer until I changed the HD.
Any ideas, David, K3ASI

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