Attention: Unsupported Video Configuration Detected


Desktop computer Forums (Audio, General Hardware, Video)

Attention: Unsupported Video Configuration Detected

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System halted!
Attention: Unsupported Video Configuration Detected

Action is Required

This computer has an add-in graphics card, but the monitor is plugged
into the integrated video connector.
To attach the monitor cable to the add-in graphics card:

1. Shut down the computer
2. Plug the monitor cable into the add-in graphics card connector.
This may require a video adapter or video adapter cable.
(provided with the system)
3. Turn on the computer.

This message should not appear after completing these steps.
For more information or help, please refer to the system documentation



I have been using this Dimension C521 for over a year now and all of a sudden this error message pops up. I didn't install any new video card, and there is no video card. My monitor is plugged into the only outlet that matches it. Is there anyway to resolve this?

All Replies
  • Still looking for help... thanks in advance.

  • Enter Setup (bios) by pressing F2 at the very first screen. Check the settings for video and correct if necessary.* The integrated video connection normally has a cap on it so it is not readily visible if you have a separate video card. Check the back of the tower again to make sure you don't have 2 video connections. Post back with what you find.


    *Get a friend to help if you are not comfortable with changing any settings in the bios.

  • Hey I am having the same problem, but when I go to BIOS set up, I dont see any set up for video,

    in the main menu of BIOS, I have option of System Date, System time, Floppy A, HDD Smart, System Info and Memory Info.

    In the advanced menu, the options are Advanced Chipset Feature ( sub-menu is only Video Memory Size), Integrated Peripherals, PnP/PCI Configuration, CPU configuration and USB configuration.

    Looking for help, please help me~~

  • Hi, so many people seem to have this problem that I wrote a little "how-to" guide. In your case it sounds like you might need to get an adapter to plug your monitor into the add-in graphics card instead of into the integrated card. See How to fix: unsupported video configuration detected for details.

  • what now happens to your integrated video card/port?  can it still function for a duplicate/second monitor?

  • I have had this same message when I have tried to connect my HD screen with my computer using a DVI-D with an HDMI, but I get this message. Is there anyway I can solve this issue?


  • daybarr, that is a nice writeup, but I want to add a second monitor.

    The primary monitor always was connected to the DVI port on the add on card.  I connected a second monitor using a VGA cable to the on board port while windows was booted.  I right clicked on the desktop and in properties for ATI2400 PRO I right clicked the second monitor and selected "Extend desktop to this monitor".  I hit apply and the second screen just wouldn't turn on.

    I figured well maybe it has to see the monitor when its powered on, so I did a shut down.  I power on and then got the message in the post above.  It's so stupid in my opinion if you have 2 graphics ports that you can't extend the desktop.  Even in Windows it shows a monitor 1 and monitor 2, just monitor 2 will not stay active.

    I installed the latest AMD 2400 graphics driver from Dell's site by going to the support and drivers section and entering the service tag number.  I also updated the bios from A09 to A14.  This is a Dell Optiplex 755.

  • We ended up installing a newer video card that had dual DVI on it.  It was only $40 from Newegg and its made by eVGA with an NVIDIA chipset.

    The new video card works great.  Now we can have dual monitors running.  This fixes the problem with the computer not supporting 2 monitors even though there were 2 ports on it.  $40 was not a bad price to be able to work more efficiently with two monitors.

  • Please I have been getting this message. I did not instill anything different. How do I resolve tis.
  • I solved the "Unsupported Video" error on Dell Optiplex 760 by updating BIOS from A03 to A16
    - The error occurred every time I tried to use the integrated VGA output (instead of the DVI output PCI-e add-on card)
    - The A03 BIOS had an option for selecting the integrated VGA, but disabled that automatically, every time it detected the PCIe card.

    So the "Unsupported Video" error was a bug in the A03 BIOS, in my case.

  • I was having the exact same problem!  I wanted to use both the add-in card and the onboard video processor to achieve dual screens.  I kept getting the message at the top.  I updated the bios and everything, nothing helped.  So I figured I would do just as you did and put in an actual dual monitor card.  

    As I was pondering this, I began to wonder if the card in there was already a dual-monitor card.  Some dual monitor cards that use DVI require a splitter cable.  So it isn't completely obvious that they are dual monitor unless you closely inspect the receptor configuration.  There is a BIG difference between dual and mono output DVI.  Sure enough, it was dual DVI.  Then I began to wonder if this was the actual cause of the whole problem.  It isn't that your computer doesn't support using both the onboard and off-board processors simutaneously, its that it doesn't support 3 video outputs!

    To test this, I put in a single DVI output card and................ works like a charm!  Further, I looked up the card that you mentioned would not work and it too is a dual output DVI.  So you could have just bought the splitter cable for $20.  But sometimes they are just expensive as the cards.  Anyway, mystery solved as far as I am concerned.

  • DVI is digital and there are no splitters.  LFH is not a splitter but rather a dual Monitor connection that can be DUAL VGA or DUAL DVI-D.

    Report Unresolved Customer Service Issues here
    I do not work for Dell. I too am a user.
    The forum is primarily user to user, with Dell employees moderating.

  • I'm having the same problem.  But my "add in" card is a TV Tuner Card (Hauppauge TV Tuner OEM WinTV-HVR-1250 Low Profile 79661) plugged into PCIe port of Dell Optiplex 745.  It does not have any VGA or DVI ports.  Suggestions?