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Is your laptop bootable to Windows? If so, Toshiba probably has included a program in Windows to make recovery disks.
If not (0r also) there is probably a recovery partition that let's you restore the o/s to factory image. Sometimes when you press the F8 key on booting up, there is an option to restore to factory settings. it may be another key when booting up for Toshiba. Sometimes it can be F12 or F10