All sounds a bit drastic. Is your keyboard on a usb or PS/2 connector (don't understand your bios issue). Found this
You can bypass all the programs in your Startup folder on an as-needed basis. To stop XP from loading any programs in the Startup folder, hold down the Shift key during bootup. No programs in the Startup folder will run, but the items will still remain there so that they will start up as they would normally the next time you boot.