Question Windows 10 won't boot

[Silverscreen07]

So I did a stupid thing by disabling CSM, enabling 4G encoding and resize bar in my bios but forgetting that my drive should be GPT not MBR (trying to get SMT enabled for GPU). Now windows 10 won't boot.
I have tried turning it all off again but hasn't done anything.

I am now stuck on the windows auto repair loop and I have tried system restore, check disk (error was found and fixed), starting in safe mode (didn't work) and resetting the PC (just told me it couldn't do it).

Anyone know how I can fix this issue please?

Have Asrock B450M pro 4 Mobo
M.2 SSD WD blue 500gb

 

[Silverscreen07]

Somehow after putting my windows 10 disk in and trying to reinstall windows (didn't work as it said my drive was locked).
System restore completed on the next boot up.....so confused...