Windows 7: Lost all the M.S Games

Played a few games of Spider Solitaire two days ago - Tried to play again this evening but the 'Games' tab comes up with an emptyGames Folder !. Running a C: Drive search finds none of the games. Had a look on my lappy Vista system and there is a C:\ProgramFiles\Microsoftgames folder which has all the M.S games in it. There is no such Folder in my Windows 7/ C: /ProgramsFolder. Copied the Vista folder to my Windows 7, but they will not run. Any suggestions what has happened , and how to get them back without a complete Windows 7 Reinstall? . By the way system Restore did'nt find them.

Go to Start->Control Panel->Programs and Features->Turn Windows Features Off and On->Make Sure that Games is checked

If above does not work
In an adminstrator account type run, in search by start menu, then type sfc /scannow then enter . Might fix your files if not
I would do a reapair install (upgrade). That should get all the files back. B

May thanks Zidane24 That worked perfectly !! Have added to your Reputation. The only thing I have to find out now is HOW and why it happened as I have done no system reconfig in the last few days
???
@richc46 - many thanks also for your suggestion - will bear it in mind if I have any further problems

Have others who mess with your computer?

Have you got Tuneup Utilities, or any program like that on your machine.?

@jfar - Yes I do have 'TuneUp Utilities 2009 trial' running Can that cause a problem ??

I had it a few builds ago, and I am almost positive that it did the same thing to my games, like yours, but they never came back for me no matter what I did, inc what Zidane24 suggested. So now I dont have it and everything is fine.