Click Repair your computer at the Install now screen. Restart PC and boot from the disk or USB.
Most people with boot issues on Windows Operating Systems (OS) will choose to reinstall the OS rather than attempt to fix the boot issue itself. This is a user case from the Windows 10 forum. Any help to get back to the status quo would be appreciated.” From that partition I can see Drive E (secondary partition) and files therein. I decided to attempt a boot from the Windows 7 only to find that it failed complaining about being unable to find an EFI boot file in System32.
The Boot Menu had lost the Icons (Metro) and offered Windows 10 - 1 and Windows 7. Earlier I wanted to do a restart and boot from my secondary partition.
I booted normally this morning and ran disk cleaning and defrag software which is normal. The primary partition is Windows 10 - 1 (C) and the secondary partition is Windows 10 - 2 (E). “I have a Dual Boot Windows 10 Desktop (or did have) with one hard drive.