I only know the very basics of computers and am not sure what’s wrong. I built this PC about 2 months ago and it’s been working fine until, while playing a game, I accidentally bumped something and it shut off mid-game. After that I wasn’t able to get it to turn on. I managed to get the computer to start twice by holding the power button for a few seconds, but it would shut off after about 5 to 10 minutes. I can no longer get it to start even when holding the power button. When I click the power button the red CPU led flashes once and then nothing happens. I am not sure what to do and would appreciate any help, thank you.