Good evening. I am looking at a PC for a friend. It's a pretty old Dell Desktop. According to her, a few nights back during some storms they had a power outage. Now the PC won't power on since then. The PC was not on at the time. Thus far I've changed out the PSU successfully and now have the light on the mobo lit, however, it still will not POST. I've also tried removing RAM and and unplugging other components to see if they may be the issue, but so far no luck. Any other suggestions?