Hello Windows 7 64 bit my specs are in my profile. I started having this issue awhile ago, but never had much time to try to troubleshoot it, in fact, it went away for a little while... I will play a game (starcraft 2) for maybe 40 minutes or so when the screen will screw up, make a buzzing noise, go the bsod and try to restart the computer. Sometimes it will restart without trouble. There's also times where I will exit the game and go to youtube and it will crash then as well. At the blue screen, I have seen these two error messages the most: bad pool caller irql not less or equal Reading through others' posts on various sites, I have done the following: updated various drivers, including my video updated bios installed the new version of Norton ran memtest (no errors) It also seemed to me that the machine was running loud, so I opened it up and blew out the dust. After this, the problem stopped for about a month. Now its back. I'm going to run memtest a few more times, swapping out the ram, because it sounds like it doesn't always catch stuff the first time. I've uploaded the two most recent minidumps. Any help would be appreciated. Thanks!