OK lets try this
Please download UVK to your desktop and install
Run UVK and select Repair system
http://i1224.photobucket.com/albums/ee362/Essexboy3/uvk%20shots/UVKfront.gif
Then select More fixes
http://i1224.photobucket.com/albums/ee362/Essexboy3/uvk%20shots/UVKrepair.gif
Run the following tasks
.Reset and fix Windows firewall.
http://i1224.photobucket.com/albums/ee362/Essexboy3/uvk%20shots/ukvfixes.gif