The problem is on a Toshiba Tecra 730XCDT laptop. I have to hold Escape for 3 seconds then press F1 to enter BIOS, and the boot options only involve both hard drives and floppy drive (which doesn't exist). The CD drive works in Windows 98, so the drive is fine. I know the CMOS battery is dead but no matter how many screws come out I can't get this thing apart. I tried updating the BIOS but it says insert 1.44 MB diskette! Any assistance much appreciated.