A buddy of mine has a Micron Pc with a pIII 750 128mb ram running WinME.

Everytime we boot the pc it automatically reboots after about 10-20 seconds.

I have tried booting to safe mode, but I get the same thing.
I even tried loading Win98Se on it and still doing the same thing.

This leads me to think think it is not a software problem.

I started troubleshooting the hardware.

Pulled the RAM and tried it in another machine. Works fine.
Pulled the sound card and tried in another machine. Works fine.
Pulled the video card and tried in another machine. Works fine.
Pulled the modem and works fine in another machine.
Pulled the network card and works fine in another machine.
Pulled the battery on the bios for over a half hour. Didn't help.
Reset the bios via jumpers on the mobo. Didn't help.
The hard drive isn't making funny sounds and it sounds "healthy".

I don't know where to go from here.

I have looked in the bios at the temp of the CPU and it looks OK. I know that if it gets too hot, it can cause a system shutdown.

Has anyone heard of anything like this?

I'm thinking it might be the power supply, but don't currently have another one to try. I'm looking for an extra one to test.

I have searched the web but didn't really come up with anything useful. Mostly how to disable auto reboot on a fatal error.

Any/all suggestions welcome.

Thanks in advance!