ParisDyre

I have had this problem too: playing games (WoT, Seige) and screen going blank and CPU/GPU fans going into turbo mode. Bought a PC from Best Buy third party: Advanced Skyline Technology Ltd. I got what seemed to be a solid gaming computer: HP Z230 GAMING SFF WS,Intel Core I7-4790,16G RAM,120G SSD+2TB,DVD-RW,GTX 1050 TI 4G,WIFI,BT 4.2,WIN10 (EN/FR)-Refurbished It's basically an office workstation with a big graphics card and a beefy i7 core. The problem ended up being that the motherboard and power source were not capable of handling the power demand from the CPU and GPU. I ended up having temperatures of CPU idling at 90 and GPU at 90 under load (using stress test from GPU-Z). I replaced the thermal paste on the GPU but still had CPU temp resting too high. It turned out that I needed a bigger power source and motherboard to accommodate the increased power load. My local shop replaced the power supply (400w) and motherboard and now I have normal performance from my PC (CPU temp at 35-40 and GPU at 65 under load). The guy who fixed my computer initially believed my graphics card (GeForce GTX 1050 Ti ; single fan) was bum but it turned out to be okay. Don't think this applies to most people's issue but wanted to share to explain that it's a reason for the symptoms. The OP was the most useful post for this issue. Thanks for sharing.