Random programs cause BSOD

So I'm running into an obnoxious problem that all started a few months back. Random games cause Windows to just instantly BSOD on me as soon as I start them. At first it was just Magicka and Painkiller, and now I can no longer play Trine, Sins of a Solar Empire, Bastion, and LIMBO. I'd like to emphasize that each game became unusable at a different time. I've reinstalled them, made sure everything's updated. I've tried everything short of backing up, wiping the hard drive and reinstalling Windows. My drivers are all up to date, I have no idea what this might be. I've now got close to a hundred dollars worth of software installed that I can't use, and near as I can tell it's not a virus.
Any ideas?

(Note: Any suggestions involving software that costs money will not be followed. I'd rather just start from scratch.)

Hi Bleth,

first, apologies your post has not been answered until now. Now to give you the best help I can I need you to do something for me. Please read and follow the directions given in the post found here:

How to ask for help with a BSOD problem