I tried installing Windows 11 on my PC, but it said my system doesn't meet the requirements. I've done this before, downgraded back to Windows 10, and now I wanted to give Windows 11 another shot. I later realized I needed to switch my settings from legacy to UEFI, which was a bit of a silly mistake on my part for not checking beforehand. Now, my PC is stuck on a recovery screen showing the message: "The application or operating system couldn't be loaded because a required file is missing or contains errors. File: \Windows\system32\winload.efi Error code: 0xc000000f." None of the options on the screen seem to work. Is there a way to fix this, or am I looking at a full Windows reinstall? If I have to reinstall, will it erase all the files on my drive?
3 Answers
Make sure to get any dump files from your system first if possible. They provide helpful logs for crashes. If you can boot into Windows or safe mode, check the C:WindowsMinidump for any crash logs. Then upload them for better diagnostics—using something like catbox.moe or MediaFire should work for sharing those.
You could try reverting to legacy BIOS settings again if that's an option. Alternatively, if you can get to the recovery menu, go to Troubleshoot > Command Prompt and run these commands: `mbr2gpt /validate` followed by `mbr2gpt /convert`. This might help convert the disk setup back to what you need.
Not really, I'm pretty much stuck before I can do anything!
First off, if you plan on reinstalling Windows, make sure you've backed up any important files if possible. When you reinstall, you have the option to keep your files, but it's always good to be safe. You might want to try cleaning your drives and then reinstalling Windows. A quick heads-up, though—updating your BIOS before doing this could help as well!
I don't think the BIOS needs updating right now. If you can access recovery via forced restarts or by using a USB installer, that should be enough to sort things out.

Are you able to access the recovery UI at all?