VIEWSONIC VT 2430 - FADED ALMOST WHITE SCREEN - After unlocking buttons by holding down vol keys - SCREEN COMES UP VERY FADED. Prior to VGA cord falling out of back of box - all was "normal". Put plug back - held vol keys "in" - screen displayed "UNLOCKING" - Put back into PC mode - then when auth screen came up - very faded - almost white. How do we reset the screen?? Is this a factory default setting?? Hold down other keys ?? This is a new unit - so no power issues, or battery issues. Thanks