1. go into system restore via Accessories (under all programs on the Start menu).
2. Select the option to restore your computer to an earlier time. Choose a rstore point that is further back than the time when you first saw the pop-up.
3. Let Windows proceed with the system restore.
4. When that's finished, go into the Control Panel and select 'System' .Click on System Restore then use the check box on there to switch off system restore, apply, wait for it to happen, and then do the same in reverse so that system restore is switched back on. By doing this you'll remove all your restore points, and you should see no more pop-ups.
Do nothing more.