OK Dr watson lets now see if the major file is there ;D

Do you have a file named wscui.cpl in Windows\system32 folder?
If it exists, double click it to run Security Center.
If the file is missing, please copy it from another known computer.

THEN

Type: regedit and hit enter

Navigate to Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\wscsvc

Is that key present - if not let me know and I will give you an export of mine