In some cases, it may be useful to modify a missing or incorrect registry key as follows:
Step 1 : open command prompt with [Windows] + [R] and enter the CMD command “ regedit to open the register;
2nd step : before making changes to the registry, we advise you to make a backup copy of the current registry file. To do this, go to File > Export and enter the name of the backup file, select “All” and click “Save”. In an emergency, you can use this backup to restore the registry;
Step 3: in the registry editor, now enter the following key at the bottom left: HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion ;
Step 4: then search for a key named ” RunOnce “. If it does not exist, click on “CurrentVersion”, go to “New” and to “ Key » ;
Step 5: enter ” RunOnce as the name of the key;
Step 6: now display ” HKEY_LOCAL_MACHINE\\SOFTWARE\Microsoft\Windows\\CurrentVersion then expand and check if “RunOnce” is there;
Step 7: if the key is there, exit the registry and reboot.
