1) Click on
"START" then "RUN"
2) Type "MSCONFIG"
and click on "OK"
3) Now Click on "LAUNCH
4) Leave Defaults and Click
5) Select a date to restore
from, (Warning all software installed after date will be completely
removed) and click on "NEXT"
6) You will be asked to
confirm date, if you are happy then click on "NEXT"
7) Your computer will now
reboot, do a bit of work and when finished the below screen will be
seen, your problem should now be solved, if not try another date prior
8) Done. You can undo system restore by simply launching
it again and selecting "UNDO RESTORE"