So as curiosity killed a cat it can kill a motherboard. This was more of an accident the mini usb port was accidently put in an outlet on extension cords and where i usually charge my phone the usb was connected to the computer USB port, the moment that happened a huge electrical shock flew it the air. I checked the outlet it was a bit charred but still useable. Unfortenatley the computer switched off right away. I left it for a few days before i touched anything. It turns out the computer wont start. I havent opened anything yet. Anyways the computer is an old computer from Dell it funtionced decently. It wasn't te best but ok for everyday tasks. Im suspecting the power that went to the usb port was 110-240 volts strong enough to kill it or is the PSU. If its the PSU i can go ahead and change it. I wanna know what parts should be intact like should the Processer, graphics card, hard disk be ok? If theres anyway to fix it please tell me