Issue started yesterday. My PC starts up just fine and stays running but display is not working or any of my USB plugins (keyboard and mouse) in the back seem to detect any power. I am getting 3 beeps from the internal speaker. I tried removing all the cables from the motherboard and reconnecting them but that didn't resolve anything.
![](https://i.ytimg.com/vi/LhrB7F-V9SA/maxresdefault.jpg)