In some cases, it may help to change a missing or incorrect registry key as follows:
Step 1: Open the command line with [Windows] + [R] and enter the CMD command “regedit” to open the registry.
Step 2: Before you make any changes to the registry, you should always make a backup copy of the current registry file. To do this, go to “File” and “Export”. Enter a name for the backup file, select “All” and click “Save”. In case of emergency, you can use the backup to restore the registry.
Step 3: Now enter the following key in the registry editor in the bottom left corner:“HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\\CurrentVersion”.
Step 4: Look for a key named “RunOnce” there. If it doesn’t exist, click on “CurrentVersion”, go to “New” and to “Key”.
Step 5: Now enter“RunOnce”as the name of the key.
Step 6: Access “HKEY_LOCAL_MACHINE\\SOFTWARE\Microsoft\\Windows\\CurrentVersion”, expand the entry and check if “RunOnce” is now present.
Step 7: If the key is present, exit the registry and reboot.