I built my PC 2 Xmas' ago and never had any issues with it so far. I turned it on the other day (haven't been on it in weeks) did some windows & GPU driver updates (Nvidia) etc, and left it on for a while and went off to do something. When I returned, the PC was still on but the screen was black and wouldn't come on. I had to turn it off by holding the power button down and restarting it again. The same thing just happened to me today, where I left it idle and then returned and the screen was black, computer lights still on - but no response. So i had to restart it again by holding the power button down. Then once computer started, I was browsing the internet and within minutes the screen went black, and I heard this loud whooshing/fan noise that wouldn't stop - I then just held in the power button to turn the machine off. I turned it back on and this is what I saw: Impeccable timing as usual - just bought MGS:V 2 days before launch! What should I do guys?! Specs: MSI GTX 770 Be quiet 630W PSU Gigabyte Z77-D3H 8GB RAM UPDATE: Took out the GPU, and now using the onboard graphics - seems to be fine.