Turn laptop off.
Hold down '0' key
before you turn on your laptop.
Keep '0' key pressed as you press the power-on button.
If that doesn't work, your only other option is to order a set of Backup Media from Toshiba:
For Europe: https

/backupmedia.toshiba.eu/
You should have made your own set of recovery discs using the pre-installed Toshiba utility when your laptop was new, then you wouldn't have to buy a set from Toshiba (they may not even have a set for older models so it's even more essential to make your own).