A friend of mine has a PC problem where the monitor suddenly goes black when playing games but the computer is still running and sound is working, we could talk to him through Curse Voice for over 10min just fine. SPECS: i5-4690K 8GB 1600Mhz DDR-3 HyperX Memory Cooler Master B700W Power supply Asus Strix GTX 970 We've tried updating all the drivers and reinstalled Windows 10 with no luck. We've tried replugging everything and checked that all the cables are attached properly. After doing all this we disabled the power saving options and hibernate option. The temps when idle is 35-45 degrees celcius for the CPU and 40-50 degrees celcius for the GPU. Under load the CPU temperature is sitting around 60-65 degrees celcius and the GPU sits on about 60-70 degrees celcius (depends on the game) We tried a different monitor and the same thing happened. We plan on changing the parts with some of my own, one part of the time to see if that works because after all this testing we suspect it to be a hardware fault of some kind (RAM or GPU). All tips are very much appreciated!