My 144Hz monitor is only showing 120Hz: Fix it fast today

If my 144hz monitor is only showing 120hz, the most likely explanations are a connection limitation, an incompatible resolution setting, or a refresh-rate option that Windows or your graphics driver has not exposed. A monitor advertised for 144Hz does not necessarily support that rate through every input, resolution, or adapter. Start by checking the exact monitor specifications, selecting the native resolution, and testing a direct connection to your graphics card. If those checks do not restore 144Hz, work through the Windows, driver, and monitor settings below before buying replacement hardware.

Why your 144Hz monitor is only showing 120Hz

A monitor running at 120Hz instead of 144Hz is not necessarily defective. The difference may come from the signal reaching the monitor rather than a problem with the panel itself.

The refresh rate measures how often a display updates its image each second. At 120Hz, the display refreshes 120 times per second; at 144Hz, it refreshes 144 times per second. Moving from 120Hz to 144Hz increases the available refreshes per second by 20%, but only if the monitor and the complete connection support that mode.

Several issues can produce the same 120Hz limit:

• The selected HDMI or DisplayPort input does not support 144Hz at the current resolution.

• The cable, adapter, dock, or KVM switch limits the available signal modes.

• Windows is using the wrong display or resolution.

• A graphics driver or control-panel configuration exposes only a subset of available modes.

• The monitor requires a documented setting to enable its maximum refresh rate.

• The advertised 144Hz specification applies to a different input or operating mode than the one being used.

There is also an important distinction between Windows offering only 120Hz and a game running at 120 FPS. If Windows lists 144Hz but a game reports 120 FPS, the monitor may already be configured correctly. The game may simply be rendering at a lower frame rate.

The first troubleshooting goal is to establish whether 144Hz is missing from the available display modes or whether an application is failing to use a mode that Windows already supports.

Check whether 120Hz is your monitor’s connection limit

Before changing settings, identify the exact monitor model and determine what its manufacturer supports. A generic description such as “144Hz gaming monitor” is insufficient because input capabilities can differ between products, revisions, and resolutions.

Verify the model’s maximum refresh rate

Find the complete model number on the rear label, in the monitor’s on-screen display (OSD), or in the product documentation. Visit the manufacturer’s support page and check the specification sheet or manual.

Look for the maximum refresh rate at the resolution you use, along with the supported modes for HDMI and DisplayPort. Check whether 144Hz is a standard operating mode or requires an optional overclocking setting.

Some monitors support their highest refresh rate only through a particular input. Others support 144Hz through multiple connections but impose different limits at higher resolutions. The exact model manual is more reliable than a retailer’s general description.

For example, Dell documents the Alienware AW2723DF as supporting up to 280Hz only through DisplayPort 1.4 with its overclocking feature enabled, while its HDMI 2.0 mode is specified up to 144Hz. That is a model-specific example, not a rule for every monitor, but it illustrates why an advertised maximum does not guarantee the same behavior through every port.

If your own monitor’s manual explicitly limits the selected input to 120Hz, Windows cannot unlock a supported 144Hz mode simply by changing a dropdown. You will need to use a compatible input or accept the documented limit.

Check the native resolution and any overclock setting

Make sure Windows is using the monitor’s recommended native resolution. A monitor might support 144Hz at 1920 × 1080 but expose fewer modes at a higher resolution, depending on its design and connection.

If the manufacturer documents an overclock option, follow the model-specific instructions. Do not confuse this with Overdrive, MPRT, or motion blur reduction. Those features affect pixel transitions or motion presentation and do not automatically increase the maximum refresh rate.

If the monitor supports standard 144Hz operation without an overclock, there is no reason to enable unrelated gaming settings. Continue by checking what Windows currently recognizes.

Fix a 144Hz monitor that is only showing 120Hz in Windows

Windows may not automatically select the highest supported refresh rate. It is worth checking the operating system before changing drivers or buying a different cable.

Select 144Hz in Advanced display

In Windows 11, follow these steps:

1. Open Settings and select System.

2. Select Display.

3. If you use more than one monitor, select the 144Hz display you want to troubleshoot.

4. Open Advanced display.

5. Find the refresh-rate dropdown under the selected display.

6. If 144Hz is listed, select it and confirm the change if Windows prompts you.

Microsoft’s documentation explains that the available refresh rates depend on the connected display and its supported modes. Windows can also mark certain refresh rates with an asterisk when they are not supported at the current resolution. Selecting such a rate can change the resolution to achieve it.

If 144Hz appears in the list, select it and check whether it remains stable. If the highest available value is 120Hz, do not assume the operating system is malfunctioning. It may be receiving an incomplete list of supported display modes because of the connection, monitor settings, or driver configuration.

Check the legacy Display Adapter Properties menu

If Advanced display lists only 120Hz, check the older Windows display-properties interface as well.

1. Open Settings, then System and Display.

2. Select Advanced display.

3. Open Display adapter properties for the affected monitor.

4. Select the Monitor tab.

5. Review the Screen refresh rate dropdown.

6. Select 144Hz only if it is listed as an available mode, then apply the change.

AMD documents this route for checking and changing a display’s refresh rate. The options still depend on the modes Windows recognizes, so this menu is a diagnostic check rather than a way to bypass hardware restrictions.

If both Windows interfaces list only 120Hz, continue with the connection and graphics settings. Repeatedly selecting the same menus will not solve an unsupported display mode.

Check for a resolution change or display-detection problem

If you recently changed the resolution, updated Windows, replaced the graphics card, or connected another monitor, Windows may be using a different display configuration from the one you had before.

Return to Display settings and select the recommended resolution. Then disconnect and reconnect the monitor if necessary, allowing Windows to detect its supported modes again.

You can also restart the computer after reconnecting the display, especially if the monitor or graphics driver was recently updated. Recheck Advanced display once Windows has loaded.

Avoid changing the resolution, color depth, scaling, and refresh rate simultaneously. Change one setting at a time so you can tell which adjustment affects the available modes.

Check HDMI and DisplayPort before replacing a cable

The connection path is a major troubleshooting priority when a 144Hz display exposes only 120Hz. The graphics output, monitor input, cable, and intermediary devices all need to support the intended resolution and refresh rate.

Try a direct DisplayPort connection

If your monitor and graphics card both support DisplayPort, connect them directly using a compatible DisplayPort cable. This is a useful test because it removes adapters and other devices that may restrict the signal.

DisplayPort is not universally required for 144Hz. Some monitors support 144Hz over HDMI, while others advertise higher refresh rates only through DisplayPort. Your monitor’s input specifications determine which connection is appropriate.

After connecting the cable, reopen Advanced display and inspect the refresh-rate options. If 144Hz appears, test the connection for stability and confirm that the monitor receives the expected signal.

If you previously used HDMI, verify whether the manual specifies a lower maximum refresh rate for that input. A different input may solve the limitation without requiring a new monitor.

Check HDMI support at the resolution you use

HDMI capabilities depend on the implementation in the source device and monitor, as well as the cable and resolution. The connector’s shape alone does not establish whether the connection supports 144Hz.

Check these details in the manufacturers’ documentation:

• The HDMI input’s maximum refresh rate at the monitor’s native resolution.

• The graphics card or laptop output’s supported display modes.

• The cable’s capability for the required signal.

• Any limitations introduced by an adapter, switch, receiver, or dock.

For example, the bandwidth requirements for 1920 × 1080 at 144Hz differ from those for 2560 × 1440 at 144Hz or 3840 × 2160 at 144Hz. A connection that works at 120Hz may not support the same resolution at 144Hz under the current configuration.

ViewSonic’s cable guidance emphasizes that the graphics output, monitor input, and connection must all support the required mode. Its recommendations are useful starting points, but the exact product specifications should take priority over a generic cable-version rule.

Remove adapters, docking stations, and KVM switches

If your monitor is connected through a docking station, KVM switch, USB video adapter, or receiver, remove that device temporarily and connect the monitor directly to a compatible graphics output.

An intermediary device may support the monitor at 120Hz but not expose a 144Hz mode at the same resolution. If direct connection restores 144Hz, check the accessory’s supported output modes before replacing anything.

For laptop users, verify that the particular HDMI or USB-C port supports the required resolution and refresh rate. Not every USB-C port provides video output, and not every dock supports all modes available from the laptop’s graphics hardware.

Do not buy a replacement cable simply because the refresh rate is limited to 120Hz. First test a known-compatible cable, port, and direct connection. If there is no change, the limitation may be elsewhere in the signal path.

Troubleshoot the graphics driver and GPU control panel

If your monitor specifications and connection support 144Hz, but Windows still exposes only 120Hz, investigate the graphics driver and its display configuration.

Check NVIDIA Control Panel

If your computer uses an NVIDIA graphics card, open NVIDIA Control Panel and select Display, then Change resolution. Choose the correct monitor and inspect the available resolutions and refresh rates.

If the native resolution is listed under the PC section, select it and check the refresh-rate options. When 144Hz appears, select it, apply the setting, and verify that the monitor remains stable.

NVIDIA’s documentation confirms that the Change resolution page lets users select an available refresh rate for the chosen display. The tool does not guarantee that every monitor supports every mode.

If Windows and NVIDIA Control Panel both offer only 120Hz, focus on the connection, resolution, monitor specifications, and driver state instead of repeatedly changing the same setting.

Check AMD Software

For a Radeon graphics card, open AMD Software: Adrenalin Edition and confirm that the correct display is selected. Available controls vary with the driver version and hardware configuration.

AMD also provides a Custom Resolution feature that checks the compatibility of a proposed display mode. However, creating a custom mode is not the same as proving that the monitor can display it correctly.

Use the standard supported refresh-rate options first. If the monitor is rated for 144Hz but only 120Hz appears, do not immediately force a custom timing. Verify the model’s supported modes and connection limitations before considering advanced configuration.

Update or roll back the graphics driver

Open Device Manager and expand Display adapters to identify your graphics hardware. Check the official NVIDIA, AMD, or computer manufacturer’s support page for a suitable driver.

If the problem started immediately after a driver update, consider rolling back to the previous working version when Windows provides that option. If the driver is outdated or corrupted, install an appropriate stable release and restart the computer when required.

After updating or rolling back the driver, check Advanced display again. Avoid installing multiple driver packages or using unofficial driver-updater utilities during troubleshooting because they can introduce further problems.

A driver update cannot overcome a physical limitation in the monitor or connection. If the available refresh rates remain unchanged, return to the manufacturer’s specifications and verify the full signal path.

Check the monitor OSD, multiple displays, and laptop settings

The monitor’s own menu can help you determine whether it is receiving the signal you expect. Use the physical buttons or joystick to open the OSD, then look for a status page showing the active input, resolution, and refresh rate.

If the OSD reports 120Hz while Windows is configured for 144Hz, check whether the Windows setting was actually applied and whether the correct monitor is selected. If the monitor has an input-specific setting or documented overclock option, follow the manual’s instructions.

Also inspect the input source. If the monitor has multiple HDMI or DisplayPort ports, make sure you are using the connection you intended to test. Do not change unrelated picture, response-time, or motion-processing settings and assume they will increase the refresh rate.

Test the monitor without a second display

If you use multiple monitors, temporarily disconnect the secondary screen or press Windows + P and choose PC screen only. Then check the available refresh rates again.

This is a diagnostic test, not proof that multiple monitors always restrict refresh rates. Different display modes, adapters, and graphics configurations can affect which modes are available. If 144Hz appears with one screen connected, reconnect the other display and accessories individually to identify what changes the configuration.

Windows lets you select and configure displays independently in the Display settings interface. Make sure you are changing the intended screen rather than the laptop’s internal display or another connected monitor.

Check laptop and docking-station limitations

If you use a laptop, consult its manual to confirm that the particular HDMI or USB-C port supports the required refresh rate at your chosen resolution.

Some laptops route different video outputs through different graphics hardware, and an external dock may expose fewer modes than a direct connection. Temporarily connect the monitor directly to a compatible port and check the refresh-rate list.

If 144Hz becomes available, investigate the dock or adapter’s documented capabilities. If it remains unavailable, confirm the monitor’s maximum refresh rate for that input and check the laptop’s graphics driver.

Check Dynamic Refresh Rate if the problem is application-specific

Windows 11 includes Dynamic Refresh Rate (DRR), a feature that can adjust refresh behavior on supported displays. Microsoft notes that DRR can limit the maximum refresh rate of some games or applications. If Windows is configured for 144Hz but an application appears to use a lower refresh rate, check the DRR setting in Advanced display and test whether disabling it resolves the application-specific behavior.

This is not the first fix to try when Windows itself lists only 120Hz. In that case, investigate the available display modes, input, and resolution first.

Verify that 144Hz works and know when to stop troubleshooting

Once 144Hz becomes available, select it in Windows and confirm the result in Advanced display. If the monitor has an information page, check the incoming signal there too.

Test desktop use and a game for flickering, black screens, signal loss, or other instability. A refresh-rate selection that appears in a menu is not sufficient reason to keep using it if the picture is unreliable.

If the monitor is documented to support 144Hz through your current connection, but a known-compatible cable, suitable resolution, correct driver, and another computer all produce the same 120Hz limit, contact the monitor manufacturer with the model number and test results.

Avoid forcing custom resolutions beyond the manufacturer’s specifications. NVIDIA explicitly warns that unsupported custom timings may permanently damage a monitor and potentially affect its warranty. Custom modes should not replace verification of the monitor’s supported operating range.

Frequently asked questions

Is 120Hz close enough to 144Hz for gaming?

Both provide smooth motion, but 144Hz can display more refreshes per second than 120Hz. The refresh interval is approximately 8.33 milliseconds at 120Hz and 6.94 milliseconds at 144Hz. The actual difference in responsiveness also depends on the game, frame rate, and display behavior.

Can an HDMI cable be the reason my monitor only reaches 120Hz?

Yes, a cable or connection limitation can prevent 144Hz from being available. However, the monitor input and graphics output must support the desired mode too. Test a compatible direct connection before buying a replacement cable.

Should I create a custom resolution to unlock 144Hz?

Not as the first troubleshooting step. Custom-resolution tools cannot guarantee that a monitor will display an unsupported mode correctly. Check the specifications and normal display settings first, and avoid timings beyond the advertised operating range.

Does my graphics card need to be powerful enough to support 144Hz?

The graphics card must support the required display output and signal mode, but gaming performance is a separate question. Even a game that runs below 144 FPS can use a monitor configured at 144Hz. A weak GPU does not automatically explain why Windows fails to offer 144Hz as a display mode.

Final verdict

When a 144Hz monitor only shows 120Hz, confirm the exact model’s input specifications, set the native resolution, and check the Windows refresh-rate options. Then test a direct HDMI or DisplayPort connection, inspect the monitor’s OSD, and troubleshoot the graphics driver if needed. If your hardware supports 144Hz, these checks can help identify the restriction without unnecessary purchases. If the current input is limited to 120Hz, use a compatible connection rather than forcing an unsupported mode.