- Restart the laptop.
- Repeatedly tap the F8 key until you see the Advanced Boot Options screen.
- Select Repair Your Computer and press Enter.
- Select your country and click Next.
- Logon as a local user.
- On the System Recovery Options screen select TOSHIBA HDD Recovery.
- Follow the on-screen instructions from here on.
For me, it took about an hour to restore, reboot several times, and be on the desktop ready to configure and join to the domain.