Reformating Hard Drive on Windows Vista?

Diskette drive or DISK drive. If its looking for a diskette (A: drive) and you don't have one (most people don't these days) then you'll have to go into the BIOS and disable the A: drive. Unless you do that the machine will keep looking for it because the BIOS says there is one there. Press F2 to get into setup. Not knowing the manufacturer I don't know which BIOS you have but if you can't see anywhere to disable the A: drive then go into the boot order and put the A: drive at the end of the list.