alright I have been trying to find a solve for this on and off for the greater part of a 6 months.
I run Windows 7 Ultimate 64bit (same issue on windows vista 64bit)
Intel core2 quad Q9400 2.66ghz
4gig ram
and a radeon HD 4850 512mb GFX card.
EP5/PKU motherboard
Ever since playing Zeno Clash I have had this same problem with the same symptoms across several games.
The computer completely cold crashes, that is, it acts as tho it was suddenly turned off and then reboots as if nothing happened.
I can't get a blue screen even if I turn off automatic restart so no crash report can be had.
The games this happens with that I know of are as follows:
Zeno clash
Oblivion
Stepmania (***)
WoW (Unless I run it in windows basic mode)
Fallout 3 (unless I restrict it to 2 cores)
Borderlands
Spore
Modern games it has never happened with:
Crysis
Demigod
Settlers 4 rise of an empire
Things I have done to solve the issue are as follows:
completely reinstalled all drivers so that they are up to date as possible.
ran stress tests to determine if it was temperature related.(temperature remained stable and normal at all times)
Ran voltage tests to see if it is power related (again stable and normal)
Two games I have been able to solve in completely conflicting ways are
WoW and Fallout 3.
Fallout was fixed by restricting the cores used (CPU issue)
WoW was fixed by putting the windows theme on basic (Graphics issue)
I have looked all over the internet for similar cases which is how I found the solve for fallout 3 and WoW. But nothing has actully given a computer wide fix or acknowledged this as a wider than one program problem.
SO! anything anyone could suggest would be fantastic I am really hoping to get this over with as it cuts me off from really enjoying anything I get.
first some question cullers:
Yes the games are legit copies.
Yes I have reinstalled the games.
Yes I have reinstalled windows.
I have had the same problem on vista64 and W7/64
Yes my drivers are up to date.