whats the model of the mb? do you have another video card to plug in and check? and just to eliminate the obvious monitor has power, works on other computers and you have plugged another monitor in to check as well.
ASUS P6T Deluxe V2 :: INTEL i7 920 @3.4 :: XFX GTX260 :: 6gb Corsair 1600 :: Corsair 750TX :: TRUE 120 :: Samsung T240 24" :: Windows 7 X64
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