You won't be able to do the USB pen drive idea, as you'd need to have the machine booted up into windows for it to be accessible as a drive, so that idea's out.
Your problem with the floppy sounds like:
Your floppy drive is disabled in the BIOS of the motherboard. (Enter your BIOS setup, and check to be sure the floppy drive is enabled, AND that your machine is set to first try booting from the floppy before trying to boot from the hard disk. Note: Usually the Boot options for your motherboard's bios are on a different page than where you enable the drive, so be sure to look through your bios setup screens quite thoroughly for something like 'Boot order', or 'Bootable devices' or something similar).
The ribbon cable is plugged in backwards, flip it so the 'red line' is on the opposite side of where it is now.
The ribbon cable is not plugged into all the pins. (Check to be sure it is completely pushed into the drive, and motherboard).
The power cable is not plugged into the floppy drive properly. (Check to be sure it is firmly inserted, and that all 4 pins are actually lined up with the holes in the plug.
Hope I've helped, good luck getting back up and running.