I got a dell computer running 512 and about 150 hdd. i switch hdds and cleaned the old one. well when i get to install windows vista or xp it says this blow in this picture: then i cant boot anything up. I have NO FLOOPY it didnt come with one. so i thought i could install and boot from cd but i was wrong. i dont know if there a reformat the bios or something please help. computer picture: my dell computer didnt come with a floopy disk.