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#11
Just out of curiosity what id the temp for the GPU? It isn't a big job to reapply the thermal compound if need be. Use Speccy for that Speccy - Download and if this looks ok then maybe a stress test might be in order.
Again try testing the volts on it's lead - don't forget the warning re the analogue meter.
I suppose the monitor software is update to date and the cable is alright too?