pc keeps restarting on startup

[seanteegan]

So my PC keeps turning on and off everytime I turn it on. Its an amd chip, and the effect is similar to when it's posting. All the hardware lights up, fans turn on, and then shuts down. This repeats 5 times before turning on fully. Keep in mind, I only press the start button once.
Does anyone have a solution?

 

[Minerva_]

i hope this helps

View: https://www.youtube.com/watch?v=gYW5wqhca7M&t=594s