Hello,I have a disc to read error codes from car ecu when i click the icon and go to diagnostic it says device not connected .The instructions tell me to change the usb serial port (com) setting in device manager.the problem is i cannot find this in ports (com & lpt) as the instructions tell me i should. Iam using windows xp and the lead to connect the car to the computer plugs in to the usb socket in the computer.
Configuration: Windows XP