Quote Originally Posted by remanz View Post
Thanks for the reply good tip.

Ultimately, it is mobo that can determine whether to restart or not, not the GPU card. So the root might be in mobo. I've never upgraded my firmware. I guess it is time to do that.
Not true at all. The motherboard is only one of many players in the stability game. If the GPU stops responding to a driver thread, the driver will detect that and fault, which may cause Windows to bugcheck depending on the severity and which version of Windows you're running (Win7 has much better video driver crash recovery than Vista/XP).

Quote Originally Posted by Jafula View Post
In my experience, usually reboots are caused by faulty hardware or faulty software drivers. Bad code generally does not cause a reboot, unless its in windows (drivers) and then you get a blue screen of death.
The caveat here is that if you leave Windows settings to default, it automatically reboots the PC when it bugchecks, so the BSOD may flash by so fast that you don't even realize it was a bugcheck. If that happens, the only way to find out what happened is to check the system event logs and/or the MEMORY.DMP if you configured it to dump anything and if the fault isn't in the disk subsystem.