I have an old Sony Vaio Notebook PCG-R505TL . Both cd-rom and floppy are external. I reformmated the Hard drive and reinstalled Windows Xp on my desktop using an IDE adapter and reinstalled the Hard Drive in my laptop. Windows boots on my desktop but not my laptop. When I power up I get a No Operating System message (black screen). I heard the reason Windows isnt booting up is because of the difference in BIOS between my desktop and laptop. The bios on the laptop doesnt give me the option to boot from anything that connects via usb. The laptop recognizes the drive is installed. So to wrap it up. Bios says the HD is installed but doesnt boot windows. Bios will not allow booting from anything other than the HD itself. My question is how do I reformat the Vaio and reinstall Windows with the hard drive is in my laptop without an internal Cd drive?