07-13-2011 06:27 PM
Hello, my G550 does not recognize my USB optic mouse. Always when I connect my mouse the windows says USB device not recognized and when it is connected when I am turning on my laptop, only black screen appears and it will not turn on even if i disconnect the mouse. The mouse works on another laptop and so another mouse works on mine. What can I try to do to make it work on my laptop? Thanks for answers.