I was using an anti virus while my computer got hanged. I manually restarted it but it started giving error message "Invalid boot media, insert proper boot device". Now if the same hard disk is attached to another computer as slave, window completes the process of installing its software but its drives are not shown. Moreover partition magic does not execute if the HD is attached as slave and gives the error message "invalid table". If the HD is disabled in device manager, partition magic then executes. Help me out. I want the hard dist to start functioning. Data recovery is not my concern.