I want to know why does not detect the signal of the computer projector. After displaying the logo of WindousXP, in the wall display only 'searching signal' . I only used VGA cable to the gate 15 (D-SUB/COMP.IN) the projector connected to computer with BenQ MP620c, then I insert the software CD in the CD / DVD of my computer, I continued the installation of software. But 'My screen' no installation continues after "configure serial port settings'. Benq MP620c does not have "Wireless module'. I would like to help me for my problem. With respect Pal Mbrozi