Windows 10: Extended monitors keep reverting to mirroring each other.

Discus and support Extended monitors keep reverting to mirroring each other. in Windows 10 Drivers and Hardware to solve the problem; I have 3 monitors. 1Laptop lenovo t490 windows 102 & 3 Dell P1914SI was able to initially set up extended monitors A-B-CWhen I restarted my laptop the... Discussion in 'Windows 10 Drivers and Hardware' started by Ruairi Smyth, Jul 6, 2022.

  1. RUAIRI SMYTH
    Ruairi Smyth Win User

    Extended monitors keep reverting to mirroring each other.


    I have 3 monitors. 1Laptop lenovo t490 windows 102 & 3 Dell P1914SI was able to initially set up extended monitors A-B-CWhen I restarted my laptop the two dell screens extend from the laptop, but now mirror each other. A-B-BMy laptop no longer recognises that there are 3 screens in the settings. but still mirrors screens 2&3. I have tried disconnecting, reconnecting, switching cables, rebooting etc etc but I can not seem to get the laptop to recognise 2&3 as separate anymore.

    :)
     
    Ruairi Smyth, Jul 6, 2022
    #1
  2. GREGMARSHALL123
    GregMarshall123 Win User

    Dual monitors will mirror won't extend!

    Have a new HP slim desktop. Want to run dual monitors. Both are hooked up and will mirror. Will not detect the second monitor to be able to extend.
     
    GregMarshall123, Jul 6, 2022
    #2
  3. KW1NM
    KW1NM Win User
    Extending 2 Dell Monitors

    Hello!

    I am very technologically challenged, and I am trying to EXTEND (not mirror) my 2 desktop Dell monitors.

    My computer only has one vga port, and my monitors have hdmi cables.

    I bought a uGreen hdmi female to vga male adapter but I still can't figure it out.

    I am able to mirror them but not extend them as i'm wanting to do for my work.

    I looked in the display settings area, and it only shows one monitor, and it won't detect the 2nd one at all.

    If anyone could be so kind to do a STEP BY STEP instruction on how to set this up, i'd greatly appreciate it!!

    Keri W

    Albuquerque
     
    KW1NM, Jul 6, 2022
    #3
  4. GDAWSON
    GDawson Win User

    Extended monitors keep reverting to mirroring each other.

    how to mirror 2nd monitor to 3rd monitor

    I was using win 7 with 3 monitors, extending desktop to second monitor and mirroring the second on the third monitor. I don't see how to do this in Win 10. Option not available?
     
    GDawson, Jul 6, 2022
    #4
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Extended monitors keep reverting to mirroring each other.

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