Blue Death!

So i was playing myself a little TF2 just now and it was kinda being laggy, which i figured was the server, then i got the BLUE SCREEN OF DEATH!!!
It was kinda scary, it's been a while since that's happened, and it's never happened on this PC.
Is there anything i need to do to figure out what caused it, or just restart the PC And move on with life?
:o

Awe !!! did you install any thing recently Drivers or such...

Drives and overheating are two major causes that show up just out of nowhere for the BSOD.

Probably okay to just check stuff and then move on with life.

yeah, i noticed one of my fans was covered in dust, i turned up my fan on my video card, but i guess i need to do it all the time, i guess with the heat going in the house, it's not used to a warmed environment...

I have Speedfan that keeps track of the temps, but i'm not sure how to monitor it during game play. Is there a program that will pop in in the middle of a game if the temps get too high? I'm not sure why i dont get too air flow in my PC, i have a huge heat sink for my CPU and my GPU has it's own fan blowing out hot air. The Power supply takes air from the botton and shoots it out the back. I'm jus tnot sure what else is making heat. I don't even think my PC runs hot, but the fans blowing out either don't have much coming, or it's warm air... I think the case (cm 690) has too much junk between the fan and the inside spaces. There are mesh screens and also a pattern of plastic below it that i belive inhibit air flow. Maybe it's time to do a little more modding to get the cold air in faster. Also wished there was an easier screen to clean for the incoming air.