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I have a Benq Q7C4 and the VGA input does not appear to be working the DVI input works fine.

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  • irenesmober Apr 30, 2009

    when i switch it on, it appears the benQ logo, but after 1 sec the display gets black and stays black!

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5 Suggested Answers

gilheero
  • 207 Answers

SOURCE: no video input, just crashed msg 'dvi

Possible!!! try to reseat your video card.maybe this will help..

if it doesn't work..let me know..

Posted on Jan 25, 2008

Mastersage
  • 164 Answers

SOURCE: DVI no input signal......VGA input active.

Are you running an additional Video card? Or are you using the built in one.
You might try cleaning the connector / plugs with acetone from finger polish remover or de=natured alcohol.
Never jam anything on a computer.
If its an add on card, remove it and reboot. Shut down and reinstall card and reboot.
keep me posted please,

Posted on Feb 22, 2009

  • 263 Answers

SOURCE: my monitor will not work with the originally

Try this if you haven't already, UNPLUG THE MONITOR FROM THE WALL.
LEAVE UNPLUGGED FOR 5mins and PLUG IT BACK IN AT THE WALL.
Alternatively try another dvi cable could be a dodgy cable.

Posted on Aug 01, 2009

  • 345 Answers

SOURCE: monitor shows VGA no input signal DVI no input

This sounds like a video card driver issue or the card it self. Make sure all cables are plugged in snug. Once done try to boot in to safe mode by restarting the computer and while it is starting keep on tapping key F8 and choose safe mode. If this works it is driver issue. If nothing happens it is the card it self. Might have to take it to a authorized repair shop. Hope this helps.

Posted on Feb 15, 2010

  • 19 Answers

SOURCE: i have HP Pro3000MT, and

you need a dvi to vga adapter not a dvi to vga plug and you must also go into your graphics card setup catalyst control center if its ATI Nvidia Display manager for Nvidia if you boot the computer with it pluged in and you can see the boot screen on bolth displays then its an os thing just right click and select the display manager the activate all display's through the managers

Posted on Apr 02, 2011

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If you have the older version with just a VGA input then buy an Xbox 360 VGA cable. You'll also need an audio adapter; 2x phono/RCA sockets going to 3.5mm stereo jack.

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Thank you for providing your configuration details.
You have failed to specify wheather or not your LCD Display is under Warrenty.

Perhaps these simple trouble shooting procedures will get the job done.

1. use the DVI to VGA adaptor that came with your card

Plug in a regular CRT monitor to the Primary Display Output Port using the DVI to VGA adaptor
( either port can be designated as the primary by you )
I like to use the Port nearest to the motherboard as the Primary

2. plug in the your LCD monitor on Secondary Display port using your DVI cable

At this point you should be able to see your desktop on the Primary CRT Display

3. Go to the display properties and use the Nvidia Dual Display Setup Wizard

set both desktops to CLONED at a resolution of 1024x768 and set the refresh to 60Hz
which is default for most LCD displays , some have higher refresh rates , consult your user manuel

If the display resolution and refresh are set incorrectly for your CRT or LCD you will see
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At this stage both displays should be showing a Windows Desktop

If you now see your desktop on both displays , you can now put the LCD on the Primary Port



No Signal Detected ( this means the display device is not receiving a signal )

If your LCD display is still displaying the error message
"No Signal Detected" after performing the trouble shooting proceedures
You may need to read the user manuel about how to enable DVI signal input.

If you are certan you have done everything correctly but still see only "No Signal Detected"

Your LCD Display may need replacement

Loch Hime :-)

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I would suggest that you should firstly try another DVI cable.

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How old are the monitors?
Normally backlights last at least 30,000hrs of working.
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3 Answers

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