I have a Panasonic Toughbook CF-30, which is no longer starting up into Windows. The computer will power on and give options for Safe Mode, Last known good configuration, or Start windows normally, but it just gives the same error "Unmountable _Boot_Volume." I have tried reseating the hard drive. When I pop in a Windows disk to try and repair, it says no disk is found. I'm not sure what to do next. I can't get the laptop to give me the option to boot from disk, I have to first change it in the BIOS. Any help with this would be appreciated. Thanks.