just a suggestion - sometimes a hardware failure can mask itself as something else - especially when it only exhibits itself after a reboot. I was just wondering if the reboot was the significant event and AVG just happened to be the reason for the reboot...AVG could be the problem, sure, but like a lot of others I have run it on a couple hundred machines around here with absolutely no problem whatsoever, and I would wonder what it could have done to prevent booting even into safe mode. I don't think AVG does any partition level monitoring? anyways - what app do you use in the studio? just curious.