Thank you for the replies.
I've put in a new case but I feel that ATX would be better than mATX because it would be easier to build into a bigger case. I've removed the case fan and worked out that I had to remove the DDR3 RAM to get DDR4 compatible boards. I found a PSU tier list a couple of pages back and used it to pick out a new PSU. It's from tier one on that list.
This is what I have now:
Looks good just keep in mind that CPU cooler is not the easiest to work with -
https://www.youtube.com/watch?v=L0NxRyfhwmY&ab_channel=GamersNexus
https://www.youtube.com/watch?v=gIx0JFEyLuQ&ab_channel=LinusTechTips
https://www.youtube.com/watch?v=x4_5L0Zq298&ab_channel=HiTechLegion