hi.. I am randomly getting a blue screen while working along in Windows 7. I had a hard drive error and my system required new battery.. so I got those and installed.. so now Windows fresh install... I have updated ALL drivers to newest from Dell. I BSOD if I try ATI AMD's drivers. I have use Dell diagnostics at start up as well as from Dell's Precision M6600 diagnostic page.. I have run stress tests, extended, anything I could think of.. and everything passes. Uninstalled new drivers and went back to basic then installed drivers again from certified driver sites for our primary software and from Dell for video. My strangest result is.... It DOES NOT CRASH / BLUESCREEN with no error (hard drive stops flashing when it happens and have to power down and restart) if I also connect a monitor or the television via either VGA or HDMI. I just cant think of what else it might be. My event viewer shows nothing except that I had to shut down system improperly.. Any ideas would be appreciated....