Then this guide can help you to enable the Control Panel again:
1) Click the Start Button
2) Click the Run Command
3) In the Run Command Windows type "regedt32"
4) Navigate to each of the following areas and change the value as listed:
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
Set Value For "NoControlPanel" to "Zero"
Set Value For "NoSetFolders" to "Zero"
5) Restart the computer
6) Now the Control Panel should be enabled and returned to the Start Menu
Recommended Tools:
-Try this custom fix to automatically fix the problem: