I do not know if this is a psu or the motherboard issue, a week ago my pc wouldn't turn on and would post loop itself, and then only the cpu fan would start up, so I unplugged everything and began diagnosing, it did turn on with a single ram, I worked on it and later again today it stopped working I tried unplugging and assembling it again but it still hasn't shown any sign of working, I can't understand what's wrong