My Win7 PC recently started to freeze randomly. No harware or major software change made, and no specific circumstances I can locate the freezing depending on. My first suspect is the GPU, but any FurMark stress-test runs well. However, when the hanging occures, my secondary monitor is not showing the mouse pointer, the cursor itself becomes distorted. The final step is the OS freezes totally, no blue-screen, just nothing respons, even the CapsLock and NumLock dies.
As I use it for working (PS, Indd, 3Dsmax, etc) I tried to stress-test the setup, I let it render a huge image and started a FurMark benchmark at the same time for an hour, without any problem. I have the feeling maybe the hanging occurs more on near-idle state. CPUID shows >90 °C when idle, isn't it too high? It drops on any stress instantly, to around 45°C on full processor capacity.
Any advice is very welcome, how can I locate the problem. Thanks in advance.
ASUS P8P67-M Pro
GeForce GTX 460
Win7 Prof. 64 Bit