Barbara, The Rand(200,99) was just a trailer message amaltom's had for under his posts, it was unrelated to this thread and so wasn't really meant for you.
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As for the Floppy in BIOS. You have to Shut Down. Then when your computer first boots up you would need to hit the key to get to your BIOS; this is different on different machines common choices are F2, F10, F11, F12, Del(ete) or Esc(ape) ... usually this flashes on your screen as it boots up.
Once in the BIOS you would need to look for a reference to floppy drives enabled. I'm not sure it would apply to USB floppys but I suppose it wouldn't hurt to try. It's possible you might have something like "USB Storage Support" in your BIOS peripherals, and I think maybe what you need enabled if you have that setting.