Toshiba Satellite A100-TA1 needs factory reset

[self.taught.empire]

I purchased a laptop and have no discs for it. First time resetting to factory settings. Attempted the 0 method but did not work. Any suggestions?
Previous owners info and pics, videos etc are still on it and I want it all gone.
Too poor to purchase discs lol

 

[rgd1101]

http://gadgetaz.com/Laptop/Toshiba_Satellite_A100-TA1--2082
windows xp? they don't have factory reset, need to reinstall the os.