Hi
If you have installed any Security Software, you may try disabling it temporarily and check if it helps.
Note: Make sure you turn on the Security Software once you are done with the test.
Try to run the program as an administrator and check.
Refer the following link to do the same.
How do I run an application once with a full administrator access token?
http://windows.microsoft.com/en-US/windows7/How-do-I-run-an-application-once-with-a-full-administrator-access-token
Additional information on:
How do I open a file if I get an access denied message?
http://windows.microsoft.com/en-US/Windows7/How-do-I-open-a-file-if-I-get-an-access-denied-message
