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240 hz monitor stuck at 120 hz

Gingaflo 0 Reputation points
2026-02-28T23:08:33.3033333+00:00

I had an old monitor for a very long time. To the point where I never checked or changed the settings since I can remember owning the thing. while playing video games, my monitor flashed to a black screen and after it flashed, I noticed a difference in refresh rate. instead of offering "144" "120" "119.98" "75" "50" etc. it only shows "120" "75" "60" etc. I spent four hours troubleshooting. I end up deciding that the monitor was the issue and I figured it was time for an upgrade. I bought a 240 hz oled monitor only for it to do the exact same thing. only 120 hz max available

I have tried new cables, both hdmi and display port

reinstalling graphics drivers both integrated and my gpu.

custom resolution.

reducing resolution.

I have no clue what to do next.

My laptop is the msi cyborg 15 a13ve. it has a i7 and 4050 laptop gpu. i used both the hdmi and the type c display port with the correct cords and nothing seems to fix it. Help!!!

Windows for home | Windows 11 | Display and graphics
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  1. Ivan B 101.8K Reputation points Independent Advisor
    2026-02-28T23:45:57.1533333+00:00

    Hi

    What resolution are you using?

    Did you check in the iGPU panel if you have a mux switch? Change it in the MSI Center. Do this without the cable connected and let me know.

    Thanks


  2. Q&A Assist
    2026-02-28T23:08:44.74+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    On Windows 11, the maximum refresh rates that can be selected are determined by a combination of:

    • What the external monitor reports as supported modes
    • What the GPU/output port supports at the current resolution and connection type
    • Windows’ own mode selection logic

    If only 120 Hz is available in Settings even on a 240 Hz monitor, Windows is not seeing any valid 240 Hz timing from the chain (laptop → cable → monitor) at the current resolution.

    Verify and adjust the refresh rate in Windows 11:

    1. Open Settings > System > Display > Advanced display.
    2. Under Select a display, choose the external monitor.
    3. Under Choose a refresh rate, check all options listed and select the highest available. Only modes the system believes are supported will appear.

    If 240 Hz does not appear there, Windows is not being offered a 240 Hz mode by the driver/monitor. In that case, only the following can change behavior:

    • Different resolution/refresh combinations: some high refresh rates are only available at lower resolutions. Use Advanced display > Display adapter properties > List All Modes and select a mode that explicitly lists the desired resolution and highest Hertz value available.
    • Different connection: some HDMI paths are bandwidth-limited and will not expose high refresh rates at higher resolutions. Using DisplayPort (or USB‑C alt‑mode that truly supports DisplayPort with enough bandwidth) can expose more modes.
    • Driver/firmware: updating or rolling back display/GPU drivers or system firmware can restore missing modes if they were available previously. This is done via Device Manager > Display adapters (update/roll back driver) or via the laptop OEM’s update tools.

    If the monitor or connection only advertises TV‑style timings (for example, 119.88 Hz instead of 120/144/240), Windows may expose only those compatible modes and internally map them. In such cases, the list of refresh rates is limited by design and cannot be overridden from Windows.

    If, after using Advanced display and List All Modes, the highest mode shown for that external monitor remains 120 Hz, then 240 Hz is not available to Windows with the current hardware/cable/firmware combination and cannot be selected from the OS.


    References:

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