Windows refuses to ignore EFI settings.
Windows refuses to ignore EFI settings.
It's tough to pinpoint exactly what occurred. If this isn't the longest sentence I've ever seen, it's quite similar. Consider splitting it up for clarity. That should make diagnosis, analysis, and fixing much smoother. Do you still have the bootable USB? If yes, restart using it and stick with the defaults. Or, when prompted about which drive to use, remove the partition for the boot drive and rebuild it via the tools on the USB. Once that's done, you should be able to reinstall Win10 after recreating the partition and then proceed with the defaults using your new partition on the boot drive.
I believe the information is damaged beyond repair, making recovery impossible. I don’t have prior knowledge in this area, so please be cautious about relying on my advice.
UEFI requires a GPT layout to start, which conflicts with Windows setup that expects an MBR layout. This mismatch causes the system to display errors like "No OS found or bootable device" after installation, leaving users confused.