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  1. Joined : Jul 2016
    Posts : 14
    Windows 10
       04 Jul 2016 #1

    Dual monitors error message "Didn't detect another display"


    Both of my monitors are working fine, but it is just the same picture being duplicated. The point of this setup is obviously to get an extended picture rather than having two monitors showing the same thing. The problem is, when I go to display settings, only one monitor is detected (which is not even technically true since both are lit up).

    The computer is an HP Pavilion 550-152I, and the monitors are running off of HDMI cables (the computer has two HDMI outputs).

    I have checked the display settings both by right clicking on the desktop and by going through the Control Panel, but neither is detecting a second monitor.
    I have tried updating display adapter drivers via the device manager, but it made no difference.

    Any suggestions?
      My System SpecsSystem Spec


  2. Joined : Nov 2015
    Posts : 1,832
    64bit Win 10 Pro ver 1607 Build 14393.693
       04 Jul 2016 #2

    Hello and welcome to the TenForums

    Have you tried the Windows Key + P to access the dual monitor setup? You might be setup as duplicate rather than extend.
      My System SpecsSystem Spec


  3. Joined : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 8,198
    Windows 10 IoT
       04 Jul 2016 #3

    Open the AMD Catalyst or NVidia control panel and see what it shows. Although, looking at your posted system specs, it shows, Microsoft Basic Display Adapter 1995 MB << If true, that's your issue. You need to install the manufacturers drivers for your video card. Either from HP or AMD or NVidia, depending on what make model your video card is.
      My System SpecsSystem Spec


  4. Joined : Jul 2016
    Posts : 14
    Windows 10
       04 Jul 2016 #4

    alphanumeric said: View Post
    Open the AMD Catalyst or NVidia control panel and see what it shows. Although, looking at your posted system specs, it shows, Microsoft Basic Display Adapter 1995 MB << If true, that's your issue. You need to install the manufacturers drivers for your video card. Either from HP or AMD or NVidia, depending on what make model your video card is.
    When I go to Device Manager, I see two display adapters: AMD Radeon R5 330 and Microsoft Basic Display Adapter. According to the DirectX Diagnostic Tool, the latter is the one being used. I don't understand how or even if it is possible to switch to the AMD adapter. In Device Manager, when right-clicking on it and selecting "Update driver software..." I get a message saying "The best driver software for your device is already installed." Might this not be correct?
      My System SpecsSystem Spec


  5. Joined : Jul 2016
    Posts : 14
    Windows 10
       04 Jul 2016 #5

    philc43 said: View Post
    Hello and welcome to the TenForums

    Have you tried the Windows Key + P to access the dual monitor setup? You might be setup as duplicate rather than extend.
    Thanks, when doing this I get a message saying "Your PC can't project to another screen. Try re-installing the driver or using a different video card."
      My System SpecsSystem Spec


  6. Joined : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 8,198
    Windows 10 IoT
       04 Jul 2016 #6

    How was Windows 10 installed? Clean install, upgrade install, factory install? It sounds like your PC has dual graphics? If one monitor is connected to the motherboard onboard video connector, and the other to a dedicated add in card, you may have to connect both monitors to the add in card for extend to work. If they are both on the add-in card, a driver update is likely needed. Go to the HP support page for you make model and download the latest Windows 10 graphics driver from there, and install it.
      My System SpecsSystem Spec


  7. Joined : Jul 2016
    Posts : 14
    Windows 10
       04 Jul 2016 #7

    alphanumeric said: View Post
    How was Windows 10 installed? Clean install, upgrade install, factory install? It sounds like your PC has dual graphics? If one monitor is connected to the motherboard onboard video connector, and the other to a dedicated add in card, you may have to connect both monitors to the add in card for extend to work. If they are both on the add-in card, a driver update is likely needed. Go to the HP support page for you make model and download the latest Windows 10 graphics driver from there, and install it.
    Thanks, I will try the HP support. I did a clean install of Windows myself. How do I find out of both are add-in cards?
      My System SpecsSystem Spec


  8. Joined : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 8,198
    Windows 10 IoT
       04 Jul 2016 #8

    Inept said: View Post
    Thanks, I will try the HP support. I did a clean install of Windows myself. How do I find out of both are add-in cards?
    Add in GPU boards are mounted in a motherboard slot, likely PCIe. An integrated GPU is mounted directly to the motherboard. The motherboard video connectors will be handy to the motherboard USB, network, and audio connectors.
      My System SpecsSystem Spec


  9. Joined : Jul 2016
    Posts : 14
    Windows 10
       04 Jul 2016 #9

    Inept said: View Post
    Thanks, I will try the HP support. I did a clean install of Windows myself. How do I find out of both are add-in cards?
    By the way, how would I connect both monitors to the add-in card, assuming that is what is required?
      My System SpecsSystem Spec


  10. Joined : Dec 2013
    Sydney, Nova Scotia, Canada
    Posts : 8,198
    Windows 10 IoT
       04 Jul 2016 #10

    Some motherboards have hybrid Crossfire, which will let you run both at the same time. You won't know if yours supports it until you install the correct drivers. If it doesn't, you move the video cable from the motherboard connector to a free one on the dedicated video card. Depending on what connectors are there, you nay have to switch cables or use an adapter. My GT 640 has two DVI and one HDMI. My 3 monitors are all DVI so I use a HDMI to DVI adapter on one monitor.
      My System SpecsSystem Spec


 
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