the computer has an older bios which you set for slave and so on it keeps saying there is no a drive and when i set it to recognize the a drive and i turn of the computer it changes again it says v1.4 bios version i think can anyone help me when i put the cd in it does nothing but say invalid system disk what could be wrong i feel i need a start up disk and i am using a public computer i would need to save it to a floppy disk