Problem with elm327

Greetings I bought an ELM327 1.5A and worked wonderfully until I installed the vag com interface for a jetta and since then when I connect the interface I marry that I do not find the controller and opening the device administrator me marks usb Ross-Tech Hex hex I have already tried in other machines and brand is not controller and the adminin of displo For the style
pra that when I connect it, I mark the RS232 and can be configured as port com.Muchas thanks