A large hammer should do the trick.
That and a lifetime vow to never purchase a Toshiba product again.
What is the precise description of the stop error ? You get a BSOD (blue screen of death) ? Sometimes there is a recovery key like F10 (depends on brand, visible during boot something like "Press <key> to restore") or something to access the (hidden) recovery partition on the hard disk (e:\ most used drive letter by OEM installations) if it is a OEM windows installation. You can find this in your manual. That way you dont have to use a floppy or cd/dvd drive. What is the precise modelname of your toshiba satellite ?
beat the thing with a bat and get her a new one.