You can't download a Toshiba factory recovery disc set, you have to order a set from Toshiba via these websites:
European Toshiba models: https

/backupmedia.toshiba.eu/
American Toshiba models:
https
/support.toshiba.com/repair
They are not free - - UK cost around £17
You are supposed to make a set of recovery discs using the Toshiba disc creation tool on your laptop while it's working okay So easy to do, it was the first thing I did when I bought mine.
If you don't bother doing an essential task it will usually end up costing you more money.