In case you run into trouble while connecting external monitor to your Sony VAIO VGN-SZ650N and you have Windows 7 installed, you might want to try our fix we have described below. The problem includes: unable to detect monitor by machine, Fn F7 keys, Win-P doesn’t work and it wouldn’t switch to external monitor.
This can be surely caused by incorrect driver on your Windows 7. To detect an external monitor successfully on your VAIO VGN-SZ650N, you can download Vista NVIDIA driver and install it on your laptop. Don’t forget to restart your machine after successful installation.
Download VGN-SZ650N software updates and drivers here
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