My dad just bought 3 (yes 3) 213Ts for his office for stock market charts n' stuff...well, for some reason, when the monitors are connected to the DVI input you cannot adjust the contrast of brightness...is this a simple configuration problem? I am quite confused....

I am able to adjust these settings fine when the monitors are connected the the regulat VGA port.
I am able to adjust these settings fine when the monitors are connected the the regulat VGA port.