PC Won't Beep or Display Anything, Fans Spin and LEDs light up

[FredSmith0]

I bought a PC around 6 months ago and when I first built it the PC ran fine. About a week ago however, my PC started turning off due to random "power surges" whenever I ran graphically intensive or CPU intensive programs. I could always reboot it immediately afterwards to find and fix the problem. What I originally thought was happening after some googling around was that the PSU would have to dump more power into that parts, resulting in the mobo detecting this sudden change as a "power surge" and shutting off. So I went into the BIOS and turned off the power surge protector, as I had he PC plugged into a power surge brick. This helped for a few days, but then the monitor would randomly turn off and read "no display". When this happened I could yet again restart it and try to fix the issue. However this time I couldn't find what was wrong. Eventually the monitor turned off for the last time. When I rebooted it there was a solid white bar running through the center of my monitor. I tried using the mobos graphics but it read "no display". The same results occurred on a separate monitor I tried. However everything still lights up and spins like normal. I have no idea what's wrong at this point.

 

[Colif]

What power supply do you have? PC shouldn't turn off if you ask it to do more work, so PSU doesn't sound like its good enough to support PC