What I did was take out the hard drive like I did the previous time I got the same message and did a Repair Install which fixed the relevant files in Windows 7.
Now I have a new problem in that unlike the previous occasion I had to do a Repair Install, I have an unusual one on that the text on various websites like Evernote and Anime News Network look weird!
Screenshot for Windows 7 Problem.png 344k .png file
In the screen shot, it clearly shows that the text has somehow been muddled up to such an extent that I can hardly tell the difference between regular text and link text.
I've never had a problem like this before when doing an Repair Install and I confess I don't know what to do to fix it.