Fix a missing Control Panel on a Windows PC by using the System File Checker or by restoring the system to an earlier point in time. Both options are available within the operating system and do not require software installation.
The Control Panel might go missing due to missing or corrupted operating system files. To repair such files, search for the Cmd.exe file by using the search box at the bottom left. Wait for Windows to find Cmd.exe, right click it, and select Run as Administrator.
Once the Command Prompt is open, make sure it's in Administrator mode by checking the title bar. Type "sfc /scannow" to start the System File Checker. Wait for Windows to find and repair missing or corrupted Control Panel files.
Alternatively, you can use the System Restore option to restore your system to an earlier point in time when the Control Panel worked. Search for System Restore on the search box and click System Restore. If the application asks for administrative privileges, grant them. Once it opens, select an earlier point to restore to and wait for the operating system to complete the entire process automatically.
If you're using Windows 8 or 8.1, the search bar is available in the Start Screen. Press the Windows key on your keyboard and follow the same steps. If using Windows Vista, find the Search feature within the Start menu.