I just got a new windows 7 computer. I do not believe the computer is reading the MPVI box. It is not showing the vin #s for any of the cars I have messed with. When I go to my computer it does not show that I have the MPVI plugged in and I get this alarm when I try and read the VCM.
No open com ports
Make sure other programs are not currently using the COM port that the interface is pluged into.