As shown in the image my Pc locks up and i need to force restart itthis behavior is happening at least once every dayRX 480 8Gbs gaming XI5 6600K @stock16 gb corsair Vengeance
Corsair Cx600W
MSI z170 Toamahwk
Is a possibility, but it could also be defective RAM as well. Run Memtest86 overnight, if it all passes, then I'd suspect the GPU.
https://www.memtest86.com