Is it recognized in the properties in your computer at all?
Also, if it's a laptop, are you pressing the proper Function+f* key combination to send the signal via external VGA?
--HDTech
I have the PN42A450p1. the Tv is simply not recongnizing the VGA cable.
the PC is always greyed out.
I have 1) tried looking and updating BIOS for my computer
2) turned the TV on first, then the laptop
3) vice versa
what could it be![]()

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