Hello CARL C VANPELT
I only got one solution for this connect the plug to another one at your home to see if the connector is getting power if that didnt work open your desktop and unplug everything wait 60 seconds and plug everything back on to see if your getting any power double check to see if there is no plug missing or damage if that doesnt work you can open your power supply and see if you can find any capacitators damage or other components (WARNING) do not open it if you are inexperience
Hope this help solve your problem :D