My computer has had issues with randoms restarts from the time I bought it. Recently it was fine for over a month and now the Graphics fan kicks on super high and the screen goes black. This happens at all different times, when idle, waking from sleep, fresh boot up, or playing a game. There is no rhyme or reason I can figure out, as I went to bed one night and woke up to this happening. I ran the online diagnostics and it all checked out fine. I can boot to safe mode with no issues. I have turned off all non-Microsoft apps from the startup and still having the same issues. I thought it was a driver issue, but the graphic card has not updated in a month. From my research I am thinking it is either the graphic card going bad or the psu. Also sometimes when I have to reboot the screen says to connect PCI power cable.
Thanks in advance for any advice and thoughts.