Shutdown and restart

Hello, and welcome to THG.

I would say there is an electrical problem. Either the OS see that you have restarted or there is something wrong in the computer itself. I would try to disconnect the power cord, go into the Computer system itself,( be careful not to touch anything on the motherboard), ad remove the power connector to the power on button and the motherboard. Reconnect it, power it on, and try to restart the system.