Follow the given steps to enable NUM LOCK key :
Click Start button then type regedit in Run option then press Enter for next.
Here locate the location to:
HKEY_USERS\.Default\Control Panel\Keyboard
Here in right side panel, double click on the value InitialKeyboardIndicators then change its value data from 0 to 2.
Now close the registry editor and restart your computer after any changes to go into effect.
