Carey said:
To turn-off System Restore:
Right-click on MY COMPUTER and select:
Properties > System Restore , make your settings
selections and click "apply". Reboot your computer.
Now go back and re-enable System Restore.
Add: I suggest that after rebooting, with it disabled, you take the
opportunity to clear out. Have Folder Options - View set to show Hidden
files, and *not* Hide Protected mode ones, look for the folder System
Volume INformation (on each drive if more than one, open it and delete
all the contents. These are old points that *ought* to have gone, but
if there has been trouble there may well be rubbish lying around and
fouling things up.
Also, when re-enabling, highlight each drive, take Settings and review
the space allowed. I think that a lot of the troubles arise because on
large drives it is by default allowed more space (12% of the drive) than
is good for it. Certainly keep it under 2GB, and I would keep it under
one (and use 500MB myself)