Dead MoBo or CPU? (Possibly RAM?)

[RobotChild]

I was working on my MythTV box last night. (The one with the crazzily desgined MoBo)
And when I powered, on I got no post, and no video.
The CPU fan, and video card fan both powered on.
The MoBo is a Sono VK 2208
The CPU is a Athlon XP 1500+
RAM is 256mb of PC100.

Any ideas?

I'll try and test the CPU in a different MoBo later.