Possible Virus?

Could be a heat issue, does it get very warm?

Also try running this: http://www.resplendence.com/whocrashed/

It can tell you what was responsible for the blue screen. Then post it back here.

The AC adapter gets hot (it's a Dell), but other than that the laptop itself doesn't get warm unless I've got it on for days at a time, which I don't do since my last adapter broke.

Downloaded whocrashed, and no result came up.