Still can't figure out what's wrong with Chronos, and it's starting to piss me off. I've found a reliable way to generate a crash: if I load up Rome: Total War, it will crash. Sometimes it dies before it goes fullscreen, sometimes it dies while loading, sometimes I get all the way to the main menu and I'm able to select "Continue Campaign" before it tanks. I tried clocking my 1.8GHz Athlon 64 3000+ down to 1.2GHz (CPU multi from 9x to 6x), and it's still tanking. I also turned my auto-shutdown temp from 60C to 65C with no luck. I doubt it's a heat issue at this point. Last night I cleaned the case out and made a brief visual inspection of all components, and everything looks good.
A couple of times it's died before it even posts, which is particularly alarming. I'm going to try to borrow somebody's (probably CJ's) PSU for a little while to see if that resolves it; if that doesn't fix the problem, I'll probably replace the mobo and go from there. I'd just hate to buy a new mobo to fit my last-gen CPU, only to find out I need to replace the CPU - if I have to replace both, I'd rather move up to current generation (AM2 or Core 2).
Blah. This r suX0rz.