And Then The Screen Went Black

My main home computer seems to be shutting down at random. This is not so good.

I'm monitoring the CPU temperature and that seems to be ok, so I don't think it's the source of the problem, although I'm having some doubts about the fan on the heatsink, because I'm hearing a periodic rattling noise. It's also possible there's a power supply problem.

Neither one of these is a wonderful thing. Now if I could just figure out what's actually broken...

And Then The Screen Went Black

My main home computer seems to be shutting down at random. This is not so good.

I'm monitoring the CPU temperature and that seems to be ok, so I don't think it's the source of the problem, although I'm having some doubts about the fan on the heatsink, because I'm hearing a periodic rattling noise. It's also possible there's a power supply problem.

Neither one of these is a wonderful thing. Now if I could just figure out what's actually broken...