Since yesterday, my PC hasn't powered on. It's a Dell G5 5090 desktop that I've had for two-ish years now. It was working fine the night before and then I turned it off to put an SSD in it (which I decided that I could do without), and never turned it back on once I put it back. When I plug it in, the PSU clicks, lights up, and the fan starts but only for a second and turns back off instead of staying on for few seconds more. Nothing happens when I press the power button. I tried just about everything from Dell's support page. Hopefully someone can help me out with this because I really need my computer this weekend for some personal stuff.