Well your Toshiba should have been shipped with a "Recovery DVD". Put that disk in your DVD drive and boot from it. If you don't have any disks contact Toshiba tech support for more information.
No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.