 GPU Constant reset after some time?
Hi guys, I recently bought a new system and was very happy till my 7600GS started acting strange. When I boot windows everything is okay, I can run 3dmark05 as much as I want, can play games, can watch movies, can work, etc. However after half a day on something... strange starts to happen. First, I loose AGP acceleration in dxdiag, all directx and tests give error but otherwise 2D is okay. I may continue working without 3D till the time I make any resolition/refres/whatever switch - for example wake up the system after it went sleeping or change the refresh rate - it changes/wakes up, but then a loop of blank screen for like 2 seconds starts. Looks like gpu reset and recover. If I do nothing - no restarts, if I'm showing menus... once per 20 sec. If I try to browse a web page - almost all the time and if there is a flash animation in the web page, I can see my screen for about 1/10 second before the next blankout. Then stranger things start to happen - buttons gets blank or completely white or in some funny pattern and it gets worse and worse till I reach the reset button. Then okay again...
1. overclocking - none, default freq, the card runs at 44C, it is completely cold on touch, both gpu and memory
2. voltages - rock stable, the fortron does its job good
3. drivers - tried several, both ngo and official, currently using 84.21 official with same effects
4. mb - latest chipset drivers, latest bios rev, bios is on default, no cpu/memory overclocking too, additional chipset fan to keep it on 40C, hdds have fans too, cpu fan most of the time is completely off and temp around 45C
5. rivatuner - reset driver and reset settings does not help, if I push reset driver while it has bugged, it tooks around 10 seconds to complete, guess lot of resets happens at the same time
6. lowering acceleration from troubleshooting, enabling/disabling dx acceleration does not help too
Guys I'm desperate. I think it i s a driver issue (though ati has bad drivers) since directly after restart everything is okay for hours, but tried a lot and don't have anything in mind. I can see experienced people around and I hope someone can help | 
