It sounds like a Bin Job, most Computers need a Floppy Drive to boot, not so much recently, especially not with Dell throwing them out but certainly back with Windows 95. Of course you could get a USB CD Drive, it may boot from that but I wouldn't know, if the Laptop has a USB.
If you're interested, I am selling a Laptop here
. Its Windows XP, so I don't know if it was more than you were planning to buy. They do sell some amazingly cheap Desktops at PC World recently, pure Tower ones without any Peripherals, extremely useful. May be worth looking into that if you were not specifically after a Laptop.
I hope you can find what you're looking for.