I thought it was a faulty USB peripheral when I first happened. Windows desktop turned red. But it happened yesterday with a BSOD too so then I figured it may be the motherboard. A thermal issue perhaps. Today, again, into windows, this time however, it seemed the screen turned red (a blank bright red screen) as soon as Speedfan loaded. Now this is interesting because speedfan accesses certain hardware for information including GPU. Also my speedfan is timed to load 1 min after windows loads via the task manager so I could see right away the red screen came as soon as speedfan loaded. It has happened twice today and both times when speedfan loads but it doesn't always happen. Now I know it's not mobo but GPU. The GPU runs perfectly even on overclock for extended periods so the GPU is ok. No artifacts or other issues. Since this red screen started a few weeks ago, I believe once the red screen appeared I would have to reboot PC, today I didn't do that and after some seconds, the display returned to normal and a message appeared saying the display driver had crashed. I looked on google and saw that others have also been experiencing this. Been using the first certified 680 driver. Haven't installed the beta cos it looked to me like it did feck all but improve the 500 series.