Installed Win 8.1 and everything appeared OK.

However, when I attempted to restart the computer, it was impossible.

Got the suggestion for refresh, which I hate.

Would not boot, even with emergency cds (tried 3), and yes I did reset the boot sequence to make the DVD drive first choice.

Eventually, I decided to bite the bullet and refresh, because I could not restore.

I then used AOMEI backupper and was able to use a previous backup file on my external hard disk

Now, I'm back to Win 8, and receiving notices to update to 8.1

No way! Unless I can be certain of success.