Hmm... What is the make and model of your PSU?
I've done FurMark several days ago 2 times for 15-15 minutes without any issues with 92 FPS and max temperature 78 °C .Thanks for the info, well your PSU certainly exceeds requirements (580 needs a 500W PSU).
It could be that the actual card is faulty even tho you can run it ok with the clocks dropped slightly..
You could try running a furmark test and see if it completes the stress test: FurMark > Downloads
I've just unplugged Graphics card and plugged it in the same place. Started windows as usual.Ah ok..
Has the reseat of the gpu helped?
Also if you have that dump file from the bsod please post.
Alright, thanks, I'll try and let's see the resultsAs you've reseated the card and Windows started as normal I'd try running the system for a while and see how you go.
If the crashing returns then try reducing clock frequency as you did before but don't increase the power.
Best of luck!