W10 wouldn't use that code. And if the OS is deeply damaged you may have to use Toshiba's recovery discs.

As to useless I find that unless I pay they are useless.

Let's hear more about:
1. Which Windows.
2. What laptop.
3. If you can order up recovery media.
4. If you need to save files since some folk either don't need to or forgot to backup what they can't lose.