I'm having problems with my PC, it randomly freezes and sometimes displays no signal resulting in a black screen when using it normally or left idle for a while.
It happens in windows 8.1, windows 7 and when trying to install windows 7 so i think it's not a software problem
Memtest86 has been running for 8 hours and no RAM errors were found
I performed a HDD test and it passed without errors
I tried to run Furmark and Prime95 and no issues were found (so it seems to be completely random, it's possible to play games perfectly until it hangs)
For the moment it hasn' t happened while running memtest or in the bios.
i5 4670k 3,4GHz
Gigabyte GTX 780 Ti Windforce
Msi z87-gd65 Gaming
8GB 1866 Kingston HyperX Beast
WD Green 500gb
change the hdmi cable. If that doesnt work, change the hdmi cable and try hooking it up to another monitor. If that doesnt work, try another gpu (don't buy one, ask a friend). Then you can eliminate several possibilities.
Update: I have just gotten a nvidia driver error after a freeze and a black screen "Display driver NVIDIA Windows Kernel Mode Driver version 332.21 stopped working and recovered" and the computer continued working
I tried that before with several versions and perfroming clean installs. Today i got a freeze and then a bluescreen with the message: DPC_WATCHDOG_VIOLATION. After that i rebooted and i noticed that the mouse worked but the mouse led was off.
New things: bought another hdd, plugged into other sata port, installed ubuntu, replaced the ram, removing the 780Ti and using the onboard one and still getting freezes. The image is a bit blurry for a second and then it fully freezes.
I think the motherboard, CPU or PSU are causing the problems.
So now i'm trying the ram in slots 2 and 4 and i will see if i can narrow the problem to at least 2 components.