This is most prob profile related. At the bottom ie right for the start pearl button is it all grey "greyed out"
Click start pearl button nothing there
You need a new profile. to do this
Log is as administrator or user with full admin rights - change
C | Users and change you name to yourname.old
Log back in as you and should all work. This is a bit nasty and not really the correct way, try it and see
All old documents etc can be copied from the .old profile, thats why you do not delete anything