Computer just switched off at random, for the second time today. This time, it happened simultaneous with a power flux event (the air conditioner halting).

Maybe I need a UPS. :(

Just happened again. Third time today. Second time in an hour? No other electrical devices seemed to have any problems. I guess I should officially be worried. :(

@mcc

Could be an older power supply starting to give up the ghost too, depending on its age.

@zetasyanthis @mcc
I've also occasionally seen random shutdowns caused by the mobo chipset overheating. A failing PSU is more likely, but if you're not seeing overheating on your CPU, that's something to look at.

Freaking VIA.

@theogrin @zetasyanthis I used to have this problem when I had a messed up video card but after restarting all my temperatures seem pretty low, cpu, gpu. If my mobo has a temperature sensor on it directly I don't know how to access it.