What happens next?

How to reset a toshiba laptop
Backup all personal data to an external usb drive or cloud storage service prior to resetting your toshiba laptop.
Resetting your computer will wipe and erase all personal data.
Power off your laptop and remove any external peripherals such as a mouse and usb drives.
Connect your toshiba laptop to a power source. Power on your laptop and press the f12 key repeatedly until the boot menu screen appears.