Black screen while playing with sound loop

[DavidMKD]

Recently some random black screens are occurring with sound loop and the PC is frozen, none of the inputs work, the only option is to hard restart the PC. It only happens when gaming. I've tried reinstalling the drivers, installing older versions of them, installing the first released version but still the problem is here. I've tested the PC and the results are kinda weird. CPU is fine, tested with Prime, RAM is fine, tested with Memtest but the HDD has problems and it has been tested with MHDD. I've included a screenshot in the attachments (AMNF error). The GPU heats up A LOT. I tested it with FurMark and when it reached 100C the system crashed (black screen like described above). I've opened the case, removed the card and cleaned it (even tho it wasn't very dusty) and placed in again. I've ran the test again and it reached 97C but the system didn't crashed. I was thinking of replacing the paste and run the test again. The PC specs are the following:

CPU: Intel(R) Core(TM) i5-2500K CPU @3.30 GHz
RAM: 6GB DDR3
Graphic card : NVIDIA GTS 450 2GB DDR3
Motherboard : Foxconn P67A-S
OS : Windows 8.1 x64
HDD: WesternDigital Green 1TB
PSU:550W 12V

 

[Laith]

Well, i don't have anything to say. If i were you i would have replaced my graphics card. That's the best i can come up with.