I have been attempting to fix a PC and have been learning while I do it. The first problem I came to was when I plugged my HDMI into the GPU and it wouldn't display. Confused, I made sure all the cords were pushed in all the way and tried again but nothing changed. Finally trying to see if something would happen when I tried a USB keyboard or a PS/2 keyboard, I noticed they didn't light up as if the motherboard wasn't giving power. Any ideas that can help?
Edit: I have a Fatal1ty B450 Gaming K4 motherboard
Edit: I have a Fatal1ty B450 Gaming K4 motherboard