My computer was running slowly, so I rebooted. It went into an "auto diagnose" mode and then said it was unable to repair Windows. All my recovery points were lost (I had made sure this was working a month ago - it always turns off, as it has again). I do not have a recovery image or disk. I tried to refresh the computer (knowing that it would wipe out all my programs - even though MS says it won't) and I am asked to put in recovery media. What is that? I downloaded Windows 8.1 from the internet so I have no media, per se. My computer supplier gave me a Windows 8 "installation" disk at one point, but that was not accepted by the refresh screen (it said "invalid media"). I have powered off and on without change. I have tried other recovery options that were offered, but none helped. I created a Windows 8.1 recovery disk on a "usb key" on another computer. I started the computer with that, but could not find any options that would help.
What can I do?