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Check whether the games have been turned off in the Turn Windows Features on or off.
To turn Windows features on, follow this step:
1. Click the Start
button, click Control Panel
, click Programs
, and then click Turn Windows features on or off
. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
2. To turn a Windows feature on, select the check box next to the feature (i.e Games). Click OK
Refer this link for more information: Turn Windows features on or off http://windows.microsoft.com/en-US/windows7/Turn-Windows-features-on-or-off
Divya R – Microsoft Support.