Try an external USB floppy drive to boot up the machine
Download the XP boot up floppy discs from Microsoft from here (you will need 6 blank floppys)

Also it is a single button to enter the BIOS usually
(F1 or F2 maybe DEL)
One of them three will enter bios sorry I cannot remember which as I no longer have a Toshiba Satellite

If you cannot get hold of a USB floppy you may be able to boot from network but This I have never done..so do not have detailed knowledge of

You need to disclose what comes on the screen when you turn your computer on.

make sure the cd rom is plugged in good I pulled the little strip off above the keyboard and took the keyboard out which made it easier to plug the cdrom in all of the way. It wouldn't read windows with a non toshiba cd-rom. It will give an IDE #2 error if the cd-rom is not in all of the way.