Computer dead?

[Pixeleet]

I was installing Windows on a box today when it locked up with 10 minutes left. So I go to reboot the darn thing and I never see a picture on the screen again. I've tried removing all the hard drives and ram, still doesn't post. The keyboard lights stay lit and the hard drive LED stays lit. If I put a CD in the drive, and reboot the computer, I can here it being spun up. So this leaves me with about 3 options for stuff that died: CPU, mobo, or PSU. I'm thinking it's the mobo, but I was just wondering if anyone knew which part died off hand before I take the system apart.

Edit: The CPU fan turns on too.

 

[brasherman]

It reads like a CPU or mobo (most likely a mobo). How old is the system? I have seen the same things on the old boards from the late 90's when the caps go bad. It's a heck of a lot easier to diagnose if you have a spare power supply.

 

[Pixeleet]

Its not terribly old. AMD 1800+, MSI K7T Turbo2. I've also tried resetting the BIOS.