imBakedAsBro

Well at least I can give my PC a pat and let it know it's not really all his fault.... Thanks for the news Terminal

For real? Having the same issue and have been monitoring temp of my HD6800series and there has been no excess heat. Other games run fine (LoL, Skyrim etc). Also had been playing DayZ heaps before this started to happen. Could it have anything to do with latest Arma2 patch?

^ Similar issue as OP, can play for about 1-10mins, then Arma2/CO or DayZ locks the PC up - blackscreen, no alt+tab, or lined screen with audio locked up gargle. Trying windowed mode but doubt that will be the issue after trying complete Win7 reinstall etc as well.....

^+ - running Arma2/CO returns same result. Black screen or lined screen PC lockup... guessing there will be no fix :/ if standalone does this its gonna hurt.

!! Having exact same issue. I use DayZCommander and was running the mod perfectly up until a few days ago. My gut feeling says latest Arma2 patch, but even reverting to older version via DayZ commander hasn't fixed. I'm not overheating. Have tried complete reinstall of Windows 7 + Arma2 then DayZ. Same issue. Comp will play DayZ or be in the DayZ menu from anywhere between 1 and 10 minutes, then the whole PC locks up. Can't alt+tab. It's either a blank black screen or lines down the screen with the audio completely frozen up into a gargle. Always have to hard re-boot. WHY?? Some kind of fix seems needed, seeing this pop up on a few forums :/