I have a computer that both floppies (3.5 & 5.25) drive led's stay on. BIOS checks O.K. Get "Drive not ready" error message when trying to access (DOS or WIN95). Tried new 3.5 drive and new cable. Tried one drive hook-up at a time. Same results. Is my integrated MB floppy port dead? Haven't tried a seperate I/O board yet.