Hello! To recover back to factory on my Toshiba.
To recover the original factory image using the utilities on your
computer’s internal storage drive:
1 Make sure the computer is turned off.
2 While powering on your computer, press the F12 key when the
initial TOSHIBA screen displays.
The boot menu appears.
3 Using the arrow keys to scroll down, select the HDD Recovery
option, and then press the ENTER key.
4 If your system offers a choice of Windows® 7 32-bit or 64-bit
operating system, select one at this time. If not, skip to step 5.
Some models are different. If you post your make and model number I can confirm how to restore to factory if the recovery partition has not been deleted or corrupted. My model number is L775D-s7222. Can be found on the bottom of your laptop.