I have to boot into BIOS to enter my pc

About a month ago my brother upgraded to windows 11 which I tried to revert back to windows 10 and it would get stuck saying there was an issue. I decided to just buy a new SSD and do a fresh install however now I have to boot into BIOS and then exit out otherwise it comes up with error code 0xc00000e. I've tried to factory reset my pc to clear the issue however now it wont let me as it says there was an issue resetting your pc. Is there any way of fixing either of these issues?