So i recently put together a computer like 2 days ago and it was working wonderfully up until now. I was playing Guild wars 2 when the game froze and turned an odd green color, so i turned it off but when i turn it on it takes a while to boot up but the screen never changes it just stays black. I noticed that the Led on my GTX 1070 turns on then off for a few minutes then on again like its rebooting and thats when the screen just turns black and stays that way. I dont hear any beeping and everything seems to be running fine. I removed the graphics card and ram and it all looks fine. Nothing is smoking or anything I'm not sure how to test whats wrong could it be the PSU? I bought a pretty good 80+ gold one. i dont have any other graphics cards or any friends i can test it on. I spent around 1000 dollars and i would love some help.