I don't use Windows either and Windows seems to be unique in that manor. Mac and Linux are by far more stable. I've noticed this by using it myself. Windows is losing ground anyway, I'd be prepared for the future. We are about to undergo a big change in the idustry from what I've seen with my two eyes lately. Windows 8 has moved a lot users over to Linux or Mac. I suggest you try one or the other. MW3 works fine using Wine on Ubuntu, not sure about Mac.
Just saying, for mac you will need to buy a new computer, but for Ubuntu you can install it on any PC/MAC just do some googling.
The most probable cause of a blue screen while gaming is hardware overheating, or voltage issues. The most common solution is making sure the fans are clean and clear of dust and debris as well as ensuring the power connectors are securely fastened.
Other causes of blue screens are driver issues, which if you're using plug n play drivers, bad. Always download the proper and most recent drivers from your hardware vendors website.
If all else fails, do a fresh winstall, and try, try, try again.
Well, A blue screen can be created by a hell lot of problems!! But when ever u get a blue screen, u even get an error code!!! So, the next time u get it, make sure to notice the error code..
For example, when i used to play DoTA (Warcraft III ), i faced the similar blue screen problem.. when i noted the error code, and browsed the net, i found the audio driver to be guilty.. i updated the driver and since then, never faced the problem again...
So, jus make sure to notice and write down the error code.. (For further help, probably jus paste the error code over here )