I was trying to install some themes I was un-installing one that I had already picked so it would usually switch back to default theme, but it switched to a blue screen and stayed like that so I had restarted my computer and when I do that I get a black screen where I should login the only thing I can see is my mouse pointer.

I have tried re-installing windows through usb.
Windows Defender Offline gives me an error upon booting it.
I also have tried starting it from Safe mode but it still didn't change anything.

Also I am not able to Restore or Factory Reset.