Okay So i brought this i7 Gaming PC From Ebay, the seller has a pretty solid Selling History so i do not doubt him, I got this today and i installed my copy of windows Ultimate then also Installed the motherboard drivers from disk and also the Graphic card drivers from disk all was going well intill my wife decided to try and switch from the vga cable to the hdmi cable while the pc was still running then pressed the power button to turn it off, now after this the power button no longer clicks like it should when pressing it to turn on and the only way to power the pc up is the flip the PSU power switch off and on and even this doesnt always work but once i get the pc to finally power up as soon as you hear the hard drive kicking in it just powers off, i have spoken to the seller and he said he tested it for 5 hours non stop when he sent it but it could be the PSU, does anyone know how i could fix this without spending more money?