Hey guys I have a Dell Lattitude E5570 that came with Windows 7 downgraded. It also came with a Win 10 Pro copy, which I put on a usb. I have set my Bios to legacy and the install fails. I downloaded the ISO from Dell and used their tool to make a usb which still fails.
I boot from the usb using legacy option. Then I choose recover from drive. After the re-install the computer reboots and asks to reset the TPM. I hit cancel to that, but I noticed my bios has been changed to UEFI.
Why is the installer changing my BIOS to UEFI I want to install in Legacy to keep the same configuration throughout our organizaiton.