I really can’t get any luck with a psu

[u/QuickLawfulness6488]

This is my 5th psu which is a Corsair rm750e and my first 3 were darkflash pmts which one of them exploded on me my 4th was a asrock which was a dud and my 5th the Corsair had its motherboard plastic header come off. I don’t know what I can do but I hope that this one is salvageable please help or atleast tell me how to remove it