I had to wait two months before I got my GTX 1080 FTW from Amazon here in the UK. I finally got the card about two months ago and it has been working fine until yesterday when I got four black screens while playing Mafia III (x3) and Forza Horizon 3 (x1).
Each time my monitor acted as if the DisplayPort had been yanked out and went into sleep mode. I could hear the fans louder than normal but it didn't sound like the card fans as I set them to 100% and they certainly didn't sound as loud as what I was hearing. I could still hear the game running or music playing in Windows when the screen went black so the PC had not clearly not crashed or shut off. Since I was unable to do anything without the display working I had no choice but to hit the Reset button on my PC case. I've been running my card at +75 MHz on the core and +250 MHz on the core using the default fan profile. Temperatures never exceeded 77 degrees C.
Each time I get a black screen there is the following warning/error shown in the Event log with EventID 4101:
Display driver nvlddmkm stopped responding and has successfully recovered. I lowered the core clock to +50 MHz and was able to play Mafia III for an hour last night (post-v1.01 patch) until I went to bed. It worked fine. I also played Forza Horizon 3 today for a couple of hours; no issues. I then played Mafia III for just over an hour this afternoon and during a mission I again got the black screen issue completely out of the blue. :(
Strange how this issue coincided with the installation of new v373.06 WHQL drivers which I installed late on Friday evening. Could they be the cause or have I always had the issue but it hasn't surfaced until now?
Should I RMA this card as at the moment the threat of a black screen is ruining my enjoyment of the games I am playing? Can I still RMA the card without having uploaded the invoice as I did not get one from Amazon UK (they seem to have stopped including them with most orders)? Or should I contact Amazon for a replacement?