System Restore Blank

I had a need to do a system restore, but when I hit the system restore
button up popped the screen but if was blank, yes just like a blank sheet of
paper couldn't do a thing with it, any idea what's gone wrong, I hope it's
not a re-install Windows XP caper, I had enough of that with Win 98.
Anyway if anyone could help I would be very gratefully.

TIA JC


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