Samsung PN59D6500DFXZA - Manual (Page 51)

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Using Your TV as a Computer (PC) Display
Entering the Video Settings (Based on Windows XP)
For your TV to work properly as a computer display, you must enter the correct video
settings.
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Depending on your version of Windows and your video card, the procedure on
your PC will probably differ slightly from the procedure presented here. However,
the same basic information will apply in most cases. (If not, contact your computer
manufacturer or Samsung Dealer.)