Windows 11 keeps forcing Dolby Vision every time I start up, even though I turned it OFF

Anonymous
2025-06-05T17:36:51+00:00

Hi all,

I have an LG OLED G4 connected to my PC (Windows 11, NVIDIA 4090 graphics card). In Windows settings I’ve turned off “Use Dolby Vision mode,” and on the TV I’ve also disabled the Dolby Vision option for that HDMI port. Despite that, every single time I power the TV and PC back on, Windows starts in Dolby Vision anyway.

The picture looks brown, dim, and washed-out until I manually go into Windows, turn the Dolby Vision toggle on and then off again. After that, it switches to the normal HDR mode I actually want (“HDR Game Optimizer” on the TV) and everything looks fine—until the next restart, when the whole problem repeats. If I turn the TV off and on again while the PC is still on, it says in HDR Game Optimizer; it's when I restart the PC and the TV that it reverts to Dolby Vision again. It'll even revert to Dolby Vision if I just restart the PC, leaving the TV on the entire time. I've also tried hard power-cycling the TV (unplugged for one minute) after getting all the settings the way I want) and the problem still occurs.

In short:

  • Dolby Vision is OFF in Windows.
  • Dolby Vision is OFF in the TV’s input settings.
  • Yet Windows still chooses Dolby Vision at every cold boot or wake-up.
  • Manually flicking the toggle fixes it temporarily, but the setting never sticks.

This started after a recent Windows and graphics-driver update. It’s making HDR on my PC basically unusable.

Please let me know how to stop Windows from forcing Dolby Vision at startup, or escalate this as a bug. I just want my system to stay in regular HDR when I’ve told it to.

Windows for home | Windows 11 | Devices and drivers

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  1. Anonymous
    2025-07-03T19:35:08+00:00

    I've had this problem since June. I've uninstall numerous updates in this thread to no avail. It's pointless 24H2 is what has busted HDR on my AMD / 5090 Build with an LG C2

    I just do the quick fix of turn DV on / off and it works until a reboot, which is OK since I'm only doing that like once a day....

    But guys, strangely the odd part is, I also have an LG C4 and it don't happen on that!!!! 24H2 with a 5070ti on an 10th gen intel!!

    But still must be a bug in the OS / HW update

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  2. Anonymous
    2025-07-02T21:16:55+00:00

    I don't even have this key in the registry :(

    And this is how my settings look like with LG C4 OLED TV and Nvidia RTX 5070 Ti, and still, Dolby Vision turns on every single time after reboot, sleep, etc.

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  3. Anonymous
    2025-07-02T05:05:59+00:00

    Yeah, this Julie guy has no clue what the hell he's talking about. To limit the dynamic range output would... well, it would limit the full capacity of our OLED panel.

    I've been using my LG OLED C2 on full, as intended by the manufacturer, since I got it. I never had any issues until those recent trash Windows updates. I hope they fix it soon, because it's a pain to turn Dolby Vision off every time I restart my PC.

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  4. Anonymous
    2025-07-02T01:56:16+00:00

    I am having the same issue, does anyone have the correct name for the Dolby Vision DWORD registry key?

    I think the missing registry key is whats causing the need to toggle DV on and off because its not writing the setting to the registry so it doesn't persist so you have to toggle it on and off to flip the bit in memory until it clears on a restart.

    Only DWORD I have under Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\VideoSettings is DisableHDROnBattery

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  5. Anonymous
    2025-07-01T15:33:13+00:00

    No, it doesn't because the whole reason this is a problem is THAT OPTION DOESN'T EXIST/WORK ON MANY PCs CONNECTED TO AN LG TV! Can people stop replying with useless advice without understanding the situation, thanks.

    Just toggle Deep Colour, off and back on in the display's own settings.

    I tried toggling on and off Deep Colour. It didn't work for me.

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