Yeah, actually I've now remembered we used an older one we had in the house because we couldn't find a decent AGP (I think that's right?) old-style motherboard for sale, and if we got a different kind we'd just have to buy a new video card and/or CPU... so it wasn't actually expensive to replace. But the other one's definitely fried-alicious, it goes into a neverending reboot cycle when it's hooked up.
Edit: I'm a poor relayer of information, not to mention way out of my league on the technology here. Mr. Clod, who was up working on it long after I went to bed last night, says it's behaving the same way with the new motherboard, so the new theory is the C: drive is what's damaged. Old motherboard is going back in, then Windows is getting reinstalled, possibly on a new drive. But I'm told the new power supply fan is working great!
