BSOD While Gaming On Windows 7?

yesterday i started receiving a bsod while i was playing diablo3. i was having no issues with the game, everything was running fine and all of a sudden the screen froze and the sound got stuck so to speak. after a few minutes i then received a bsod. i rebooted the computer and went back to playing. i received another bsod. i looked on the diablo3 forums and saw that this was an issue that was affecting a lot of players. but before this day i had been playing the game fine for hours at a time for at least 5 days. i saw that the graphics drivers may be causing an issue so i made sure that they were up to date. i still received the bsod after 20-40 minutes of playing. i tried reverting to old drivers and still received the bsod. i tried uninstalling the game and re-installing and still received the bsod. i decided to try a different game and after about 30 minutes of that game my computer crashed. both of the games are made by blizzard so i thought it might be an issue with them. however, i have never received an error before when playing the second game, which i have been playing for a year or so on this computer.i then tried watching a video on Internet and after about 23 minutes it froze and i got the bsod. i tried one more time to watch another video and this time i lasted almost an hour before it crashed. i decided to let my computer sit with nothing on the screen for almost 2 hours. when i went to open the internet it didn't seem to respond and just hung with the blue busy wheel. i was not able to open any program. i did ctrl+alt+del and got a black screen followed by a box that read "failure to display security and shut down options". i then had to turn the computer off by the power button.my computer doesn't seem to be writing dump files even though i have enabled them to be saved. im not sure how to remedy that. i have tried updating my graphics drivers and reverting to old ones. i have done a memtest and no problems were detected. i monitor my temps and it never seems to get anywhere close to overheating.i have never had a problem with this computer until yesterday. the only major things that have changed is that i downloaded diablo3 on the 25th (though i didnt start receiving the bsods until the 30th) and i have recently moved so i have a new router and internet connection.

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