Today in just replaced my power supply for the first time. And in think I've done it in the wrong order. Here are the images on what I did. And below will be the link to the new power supply I have
https://imgshare.io/image/3TTww
https://imgshare.io/image/3TYPK
https://imgshare.io/image/3TmDj
https://imgshare.io/image/3T00y
https://www.amazon.co.uk/Seasonic-FOCUS-Power-Supply-SSR-550FX/dp/B073GY89G5
https://imgshare.io/image/3TTww
https://www.amazon.co.uk/Seasonic-FOCUS-Power-Supply-SSR-550FX/dp/B073GY89G5