I have a EVGA GTX780ti SC and last night I was playing Prepar3D and during the flight, suddenly I lost signal on both monitors.
I heard the fans at maximum before this, but I tought it was normal (hot temperatures in the room ~27oC). When this happenned, the fans kept at max, no display and I still heard sound.
Now I'm connected via onboard display and pc is working normally except for the graphics card that continues at max and isn't detected by the pc on both PCI-e Express slots.
I have already checked the PSU but seems okay and I tried to switch PCI-e cables positions on the psu and switch between slots PCI-e express. Nothing worked
MB: Asus P8z77 pro
CPU: Intel i7 3770k
Memory: 12GB DDR3
GPU:EVGA GTX780ti SC