After the latest windows update, my PC was stuck in a boot loop. Automatic repair failed to do anything, uninstalling previous updates didn’t work, and I’ve tried just about every tutorial online and every command line in the command prompt. So I decided to reinstall windows by formatting my C drive as I normally would. But this is where the real issue starts.

It doesn’t let me format my c drive to install windows. It says “we couldn’t format the selected partition. Error: 0x8004242d”. However, wherever I attempt to install windows I get the exact same issue. So it won’t let me format any partition. And it also says it’s because my drive is MBR.

My hard disk (both of them) are in the MBR format. My motherboard has a UEFI bios. Apparently this bios only supports the GPT drive format. It seems like the only option is to convert my drive from MBR to GPT, but this would delete all of my data in the process

So I’m just wondering if there’s any way to salvage my data. I still have my old PC somewhere. Would putting my hard drive into my old pc and installing windows there and then putting it back into my actual PC be a viable option? Or is there a way to enable legacy mode on my motherboard. For reference I have the MSI MAG B550 Tomahawk.