I do NOT understand. Its been 2 weeks since I have tried posting and the same thing just happened from 2 weeks ago. I had a 450W psu and it made a click noise and didn't power up. I bought a 700W psu, did something to it IDK WHAT but it make my computer run for a few hours. Couldnt do anything because I needed to flash my bios in order for my 9th gen processor to work. SO that being said, I bought a Celeron G4900 in order to post the system, get into the bios, and flash update it. Well guess what? I CANT. MY PSU MAKES THE SAME CLICK NOISE AND MY CPU LIGHT TURNS ON FROM MY MOTHERBOARD!!! HELP?!?!?!?!