erm..i face this prob before.u can try by selecting menu>setup>auto source and then change to manual.then shut down ur pc, unplug ur vga cable and plug-in ur dvi.then switch on ur pc..hope this can help u...

What he meant is this. Usually a LCD monitor that supports VGA and DVI-D segregate the them in two input channels. One for VGA and the other for DVI-D. So all you need to do is just select the correct channel on the LCD itself. Usually it is accessible by a button or via the on-screen menu. Please check your manual for the instructions.

If you have already selected the correct channel and still no picture is displayed, the you have to check the driver settings. Common graphic cards support duo display via a VGA analog output and a DVI-I output. Check your graphic settings which output port it is using. This is usually auto-detected at start-up but some issues could prevent it from happening. If selecting the correct output isn't helping, then try upgrading the display driver.

hey guys, which brand is the best and cheap for the LCD 19' wide screen one? i want to get one maybe in the future. thanks.