- Everything running at stock. CPU rock solid and stable with prime95/handbrake etc. RAM set at rated timings and speed.
- Various drivers from 327.23, 331.40 and today's new R331 WHQL (clean installed including using Guru3D driversweep.
- Tried on Windows 7 and now having same issue on a fresh installation Windows 8.1.
- Update motherboard BIOS from F5 to F7 and tried beta BIOS F8b.
- Disabled the iGPU and uninstalled Intel drivers for it.
- Tested with another power supply (XFX 750W
- All drivers and windows updates done.
Included a couple of videos and a screen shot. Usually get artefacts a split second before application crashes or system completely freezes. Sorry for the poor quality phone camera pic but I can't do a screen capture at the system become unresponsive.
Tried the GTX in a different PCI-E slot and connected to TV via HDMI. Still crashes.
CPU prime95 stable @ stock.
Memtest86 9hours without errors.
Intel HD4600 iGPU runs benchmark and games fine without crashing or freezing etc.
skip to 2:00
and another, skip to 2:55
Faulty Gigabyte GTX 680 Unigine Valley Benchmark - YouTube
At a loss as to what else it could be, would it be a pretty safe to bet on the GPU?
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