My pc at first wasn’t showing one of my sticks of ram, so I first switched them around to different slots, still the same out come. Then I took one out, turned on my pc to see if it would run and it did. Then tryed the other ram stick and it worked too, so it’s not the ram that is the issue. Then after trying all that and then putting my pc back to normal, it just wouldn’t boot up right. It will show the motherboard brand logo, then shut off. It says USB device over current not detected, i’ve tried everything that was recommended on youtube. I unplugged my front usbs from my mother board, took out the CMOS battery for 1 min, and also unplugged all the usb devices. Nothing has worked. It’s not my pc, it’s my brothers. He lives far from me and had to have his pc dropped off, I only got a few days to figure this out.