Did a partition of my Dell Inspiron 560 desktop pc hard drive, but before I could format it, it responded with " Missing Operating System". I then rebooted the pc into the BIOS to change the boot device to the DVD/CD drive and saved the settings and rebooted the pc with a cd that has windows 98 2nd edition. That did'nt work so I tried Windows Vista cd, Windows 7 cd & etc. But what happens every time is that the pc says "Missing Operating System".I ran a diagnostic test and everything passed.
I NEED SOMEONE HELP WITH A SOLUTION!