1. Press WINDOWS KEY + R together, when the Run Window pops-up type in regedit and click on **Run

    Run -> Regedit

    **

  2. In the Registry Edit windows that pops-up, navigate to HKEY_USERS->.DEFAULT->CONTROL PANEL->KEYBOARD and double click on InitialKeyboardIndicators on the right

    **RegEdit - Initialkeyboardindicators

    **

  3. Set the Value data value to 2 and click OK

    Edit String - RegEdit

  4. Reboot your machine and the Num Lock should be on without turning it on mannually.