how do i mirror my windows 11 pc screen on my new lg wifi tv?

Richard Parker 0 Reputation points
2026-09-12T18:33:18.3+00:00

I cannot get my new lg tv to be detected on my new windows 11 pc by using "Windows + K". What do i do now?

Windows for home | Windows 11 | Display and graphics
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  1. Vikki-T 10,375 Reputation points Microsoft External Staff Moderator
    2026-09-15T08:24:23.4933333+00:00

    Hi Richard Parker,

    I understand how inconvenient it is when a new TV does not appear in the Cast list.

    When you press Windows key + K, do you see a message saying that your PC does not support Miracast, or does Windows simply find no available displays? This will help determine whether the issue is with the PC’s compatibility or the TV’s discoverability.

    Please make sure Wi-Fi is enabled on the PC, even if the PC currently uses an Ethernet cable. On the LG TV, open the Screen Share, Miracast, or Wireless Display feature and leave that screen open while searching again from Windows.

    If the TV still does not appear, please provide the exact LG TV model and check whether its specifications explicitly list Miracast support. You can also update the PC’s Wi-Fi and graphics drivers from the PC manufacturer’s official support page. If that TV model supports only Chromecast or another casting protocol, Windows key + K will not detect it, so an HDMI cable or a compatible Miracast adapter would be needed.

    You may also follow Microsoft’s official troubleshooting guidance here: Fix connections to wireless displays or docks in Windows Thank you so much for your understanding.     

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. Ivan B 123.6K Reputation points Independent Advisor
    2026-09-12T19:08:22.8466667+00:00

    Hi,

    Does this new PC have a Wi-Fi connection, or is it connected via cable?

    You can try the following: open Chrome, click the ... menu, look for and select "Cast," and see if the TV appears.

    Thanks.

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  3. AI answer

    2026-09-12T18:33:28.5366667+00:00

    To mirror a Windows 11 PC to a TV, the TV must support Miracast. Windows Cast with Windows key + K uses Miracast, not Chromecast.

    Try these steps in order:

    1. On the LG TV, turn on its screen sharing / Miracast feature.
    2. On the Windows 11 PC, press Windows key + K and check whether the TV appears.
    3. If it still does not appear, make sure Windows 11 is fully updated:
      • Go to Start > Settings > Windows Update > Check for updates.
    4. Restart both the PC and the TV, then try Windows key + K again.
    5. If the TV still is not detected, use a wired HDMI connection instead. Miracast can be unreliable on some TVs.

    Important details:

    • Chromecast is not required for Windows casting.
    • Miracast works over wireless display technology, not Bluetooth.
    • If the connection later appears but is unstable, restarting the TV can help.
    AI-generated content may be incorrect. Read our transparency notes for more information.

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