After applying an update last week, a friend has a computer that will not start properly. It goes into a "diagnostic" mode then offers two options. Restart or Advanced. Clicking on either starts the whole process all over again. Sorry, I can't be more specific as he lives in another country and I don't have access to the system.
What I do know is that it is an HP laptop that originally came with Vista. Somewhere along the line, HP sent him a set of Windows 7 update DVD's. He updated to Windows 10 online. I had him try F11 to restore to original Vista, but he says there is no repair partition found. Neither of the Windows 7 update DVD's will boot.
Any ideas? A lot of what I have been reading offers fixes from within Windows 10, but what to do if you cannot get into Windows 10?