How to fix Gaming PC that randomly restarts (crashes) whilst in use | Corsair CX750M PSU problem

In this video I describe to you the issue that I had with MSI Gaming PC, whereby it would randomly crash and restart whilst playing the popular game Valorant.
This is where you can purchase the power supply which I ultimately installed to resolve this issue:
Amazon (US and General): amzn.to/3ePJ3Go
Amazon (Australia): amzn.to/3bsZQNd
The PC is specifically has a MSI Z97 Gaming 3 Motherboard and MSI GTX7600 Graphics Card (GPU).