I have tried everything, including what you have suggested, but thank you for the suggestions anyway. When trying to recover to an earlier time, the option is greyed out thus eliminating that possibility. Using the recovery disk also greys out the option to keep files and the option to keep...
Incredibly perhaps, whilst I was using my computer this morning, it rebooted and installed some updates. One of the updates included converting my computer to the windows insider program which I did not want. It did not ask if I agreed. It just did it. I contacted Microsoft support who told me...