Hi friends I am using Sony Vaio VGC-LV150J desktop pc. It has Windows 7 operating system. I had upgraded my system on Windows Vista. I had bought a new widescreen monitor that has a hdmi port. After connection I am not able to switch between vga and HDMI input. I had selected the source from the monitor but there is no display. I had connected my old monitor on vga where it is giving me proper output.
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