Why does my 144hz monitor only go up to 75.1hz when i connect my asus vivobook go 15 laptop up to my monitor?

Hagen Pond 0 Reputation points
2026-09-11T20:28:20.6633333+00:00

So i got an asus monitor and asus laptop, my monitor is 144hz and i have the gaming mode activated to overclock to 120fps, however i cannot see the option to switch to 120hz from the setting menu, what do i do? the hdmi i use is the same one i use on my xbox which can show 120fps what do i do?

Windows for home | Windows 11 | Display and graphics
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  1. Clary-N 15,745 Reputation points Microsoft External Staff Moderator
    2026-09-12T07:59:06.2566667+00:00

    Hi Hagen Pond,

    Thank you for sharing the details. If you have not already done so, please try the suggestions in the AI Answer and let me know whether they make any difference.

    If the monitor is still limited to 75.1 Hz, could you provide the complete model numbers of both your ASUS Vivobook Go 15 and ASUS monitor? The exact models are important because supported refresh rates can vary depending on the laptop’s video output and the monitor input being used.

    I also recommend checking the monitor’s Supported Timing List in its user manual. This should confirm whether 120 Hz or 144 Hz is supported through the HDMI input at your selected resolution. ASUS recommends checking this list when the expected refresh rate is unavailable.

    You can also check what modes the monitor is reporting to Windows:

    1. Open Settings > System > Display > Advanced display.
    2. Select Display adapter properties for Display 2.
    3. On the Adapter tab, select List All Modes.
    4. Check whether 120 Hz or 144 Hz appears anywhere in the list.

    Please also look under Device Manager > Monitors and let me know whether the monitor appears under its correct ASUS model name or as Generic PnP Monitor. If ASUS provides a monitor driver or firmware update for the exact model, you can install it from the ASUS support page and restart the laptop.

    Please share the model numbers and, if possible, a screenshot of the List All Modes window. This will help confirm whether Windows is receiving the correct refresh-rate information from the monitor or whether the laptop’s output is the limiting factor.

    I hope this helps.

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  2. AI answer

    2026-09-11T20:28:41.68+00:00

    A 144 Hz monitor can still be limited by the laptop’s video output path. In this case, the most likely causes are the connection type, the specific USB-C/HDMI capabilities on the laptop, or the display path through a dock/dongle.

    Try this in order:

    1. In Windows, confirm the display mode is set correctly.
      • Press Windows logo key + P.
      • Make sure Extend is selected if using the monitor as a second display.
    2. Check whether the laptop is connected directly to the monitor.
      • If a hub, dock, adapter, or dongle is in the path, remove it and connect the monitor directly to the laptop.
      • External hubs and docks can limit display capability.
    3. If using USB-C for display, verify the port and cable support the correct Alternate Mode.
      • The PC, external display, and cable must all support the needed display mode.
      • A DisplayPort Alternate Mode adapter must be connected to a USB-C port that supports DisplayPort Alternate Mode.
      • USB-C automatically uses the appropriate mode if supported; there is no setting to turn on.
    4. Try a different connection type if available.
      • If the laptop has another video output path, test that instead.
      • If the laptop has USB-C with display support, a direct USB-C display connection or a USB-C display adapter may work differently than the current HDMI path.
    5. Test basic hardware isolation.
      • Disconnect all accessories from the laptop.
      • Reseat the display cable.
      • Try a different cable.
      • Try the monitor with a different system, and try the laptop with a different monitor.
      • This helps confirm whether the limit is coming from the laptop output path.
    6. Reset and refresh the graphics stack.
      • Press Windows logo key + Ctrl + Shift + B to reset the graphics driver.
      • Restart the laptop.
    7. If the problem started after a driver update, roll back the display driver.
      • Open Device Manager.
      • Expand Display adapters.
      • Right-click the display adapter > Properties > Driver tab > Roll Back Driver.
    8. If rollback is not available or does not help, reinstall the display driver.
      • Open Device Manager.
      • Expand Display adapters.
      • Right-click the adapter > Uninstall device.
      • Select Attempt to remove the driver for this device > Uninstall.
      • Restart if prompted.
      • Open Device Manager again.
      • Right-click the adapter > Update driver > Search automatically for updated driver software.

    Important limits from Windows display guidance:

    • Windows supports common refresh rates such as 60 Hz and 120 Hz when the hardware and firmware report support for them.
    • For USB-C display connections, the PC, cable, and display must all support the required display mode.
    • If a dock is being used, the dock itself can impose a maximum refresh rate or resolution even if the display supports more.

    Since the same HDMI cable works at 120 fps on Xbox, that does not prove the laptop can output the same refresh rate through its own port. The laptop’s output capability and the exact port path still determine what Windows can offer.

    If the laptop has a USB-C port with display support, testing a direct USB-C display connection is the best next step. If the laptop only has one video output path, that path may be the limiting factor.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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