Click Start then search Run application or Press Windows key + R,

Type regedit and press Enter. This will open the Registry Editor of Windows. 

In the registry, expand HKEY_CURRENT_USER > Control Panel > Keyboard.

In the Keyboard folder, Change “InitialKeyboardIndicators” with the below values base your need: 

• 0 => Num Lock is turned OFF after the logon.
• 1 => Disable Num Lock.
• 2 => Numlock is turned ON after the logon.