20inch monitor only has video for fraction of a second. then goes out. does this every minute or so. i used vga instead of dvi, same. i used mobo instead of video card, same. picture comes to second screen ( 32inch sceptre tv) with no problem. blue lite comes on instead of red letters on case, but no pic.

Try using a VGA to VGA cable or a dvi to dvi cable because dvi-d and hdmi tend to lack the necessary pins to be converted to an analogue signal. A hdmi to dvi cable may also work

This is typical when there is no communication with video card. Test on another PC. Re-seat video card on PC. Use VGA cable instead of HDMI or DVI. Make sure monitor is correct mode. Again VGA, DVI, or HDMI, depending on cable used.

This PC has a VGA and a DVI ports? Are both ports on the motherboard or a Video card? Or is the VGA onboard video and DVI is a Video card? You may have to disable the DVI port to get Video to vga or enable the vga port.

I see that this monitor has a DVI input, in additon to the VGA input. I suggest getting a suitable cable to use the DVI input, to see if the fault replicates. If it doesn't, you have identified the problem - an issue with the analogue signal processeing circuitry in either the monitor or the computer. The monitor's auto sleep analogue circuitry, for example, may not be sensing a signal, and going to sleep. BTW, if you use a DVI-DVI cable, you avoid the video signal ever going through an analogue stage, and the image will also be purer.

DVI ==> Digital Video Input
If your monitor has both DVI and VGA inputs,
and your PC's video-card has both DVI and VGA outputs,
then buy a DVI-to-DVI cable, and use it, for a better picture.
If your monitor has both DVI and VGA inputs,
and your PC's video-card only has VGA output,
then use a VGA-to-VGA cable.
Or, purchase a video-card with DVI output,
to replace the video-card with VGA output,
and then use a DVI-to-DVI cable.

Hi Kathy,

Nothing you can do, it could be the laptop does not understand Digital Video Interface DVI

What is the laptop make / model?

Hi there

I would say it's the graphics card that's failed. You might get the same beeps for faulty card as removed card....

Take it to a shop where they can test a compatible card, before they sell you one or install one for you.

I have read it may be an inverter. Anyone know what that is or where I can get one for the mag lcd moniter lt1919wdb?

Which connector are you currently using? They should be white and blue.(hint: the blue is VGA, the white is DVI). If you're using the VGA connector on both monitors, you will need to purchase an DVI to VGA adapter. Fairly common and can be found online for less than $5 here: http://www.newegg.com/Product/Product.aspx?Item=N82E16814998101

Now, if you're wanting to use two DVI monitors, you'll need to buy a video card that has two DVI connectors already on it, as you cannot convert VGA to DVI.