If you are troubleshooting aoc monitor not showing 144hz, start by checking the exact model number, supported resolution, and connection type before changing Windows or graphics settings. Some AOC gaming monitors support 144Hz, but not every AOC display has that maximum refresh rate, and supported modes can vary by input and resolution. If your monitor is designed for 144Hz but Windows offers only 60Hz or 120Hz, the cause may be the selected display mode, a cable or adapter limitation, the graphics driver, or the monitor’s configuration. Follow the checks below in order to restore the highest supported refresh rate without forcing an incompatible display signal.
- Fix the AOC monitor not showing 144Hz problem first
- Check whether your AOC model actually supports 144Hz
- Set the correct resolution and refresh rate in Windows
- Check the HDMI or DisplayPort connection
- Check the AOC monitor’s OSD settings
- Update the graphics driver and check AOC support downloads
- What to do if your AOC monitor is still not showing 144Hz
- Frequently asked questions
- Final verdict
Fix the AOC monitor not showing 144Hz problem first
The quickest troubleshooting approach is to verify that your specific AOC monitor supports 144Hz in the current connection configuration, then check whether Windows recognizes that mode. Avoid jumping straight to custom resolutions or replacing hardware before identifying where the limitation occurs.
Start with these checks:
-
Confirm the exact AOC model number and its maximum refresh rate.
-
Set Windows to the monitor’s recommended native resolution.
-
Select the correct screen in Advanced display settings.
-
Check the HDMI or DisplayPort connection, including any adapter or docking station.
-
Inspect the monitor’s on-screen display (OSD) for relevant input or refresh-rate settings.
-
Check the graphics driver and, if necessary, the monitor’s official support downloads.
-
Determine whether the 144Hz option is missing in Windows, in a graphics control panel, or only inside a game.
The order matters because the same symptom can have different causes. A monitor that supports only 120Hz cannot be made into a native 144Hz display through a Windows setting. Conversely, a genuine 144Hz monitor may remain limited to 60Hz simply because Windows is using an unsuitable display mode or the connection does not expose the expected refresh rate.
It is also important to distinguish a missing refresh-rate option from low frame rates in games. Windows can run a monitor at 144Hz while a game renders fewer than 144 frames per second. The first problem concerns the display signal; the second concerns the performance of the game and computer.
Check whether your AOC model actually supports 144Hz
Before troubleshooting drivers or cables, verify the display’s official specifications. AOC sells monitors with different maximum refresh rates, so the brand name alone does not establish whether your screen supports 144Hz.
For example, the official AOC US specifications for the G2490VX list a maximum refresh rate of 144Hz, a native resolution of 1920 × 1080, one HDMI 1.4 input, and one DisplayPort 1.2 input. Other AOC models have different specifications, including displays designed for lower maximum refresh rates. These differences make the complete model number essential when investigating a missing option.
Find the full model number and check the manual
Look for the model label on the back of the monitor or check the product information in its OSD. Record the entire model number, including any suffix that identifies a regional or revised version.
Then open the official AOC product or support page for that exact model. Check the maximum refresh rate, native resolution, supported input modes, and any notes about overclocked refresh rates.
Do not rely exclusively on the number in a retailer’s product title. A model advertised as a gaming monitor may support 100Hz, 120Hz, 144Hz, or another refresh rate, depending on the product. Some displays advertise an overclocked maximum that requires a specific monitor setting.
If the manual confirms that the display supports 144Hz only at a particular resolution, use that resolution for the initial troubleshooting test. If the official maximum is below 144Hz, the missing option is not necessarily a fault.
Check for model-specific overclocking requirements
Some AOC monitors offer an overclocking setting, while others simply operate within their specified refresh-rate range. If your exact manual documents an overclock option, follow its instructions and verify whether enabling it changes the available modes.
Do not confuse refresh-rate overclocking with response-time settings such as Overdrive or MPRT. Those features affect pixel transitions or motion presentation; they do not automatically unlock a higher refresh rate.
If the monitor is rated for 144Hz without requiring an overclock, leave any unrelated gaming settings alone for now. The next step is to check how Windows identifies the display.
Set the correct resolution and refresh rate in Windows
Windows does not always select a high refresh rate automatically. Even when a monitor supports 144Hz, its desktop configuration may remain at 60Hz or another supported rate until you select the desired mode.
Change the refresh rate in Windows 11
Follow these steps:
-
Right-click the desktop and select Settings.
-
Open System, then Display.
-
If multiple screens are connected, select the AOC monitor you want to configure.
-
Open Advanced display.
-
Find Choose a refresh rate and inspect the available options.
-
Select 144Hz if it appears, then confirm the change if Windows requests confirmation.
Microsoft’s Windows guidance explains that the available refresh rates depend on the display’s supported modes. It also notes that an asterisk beside a rate indicates that the rate is not supported at the current resolution. Choosing an option marked this way can change the resolution to achieve that refresh rate.
If you see 144Hz in the list, select it and verify that the display remains stable. If you only see 60Hz or 120Hz, continue with the remaining checks rather than assuming the monitor is defective.
Check the resolution before trying other fixes
Return to Settings, then System and Display. Under Display resolution, choose the recommended native resolution for your AOC model.
A common troubleshooting mistake is to change several display settings at once. Start with the manufacturer’s recommended resolution and then revisit Advanced display. This makes it easier to determine whether the missing refresh rate was caused by the resolution configuration.
For a monitor with a native resolution of 1920 × 1080, for example, use 1920 × 1080 for the first test if that is the resolution specified in its manual. Do not apply that example blindly to a model with a different native resolution.
If 144Hz appears only at a lower resolution, check the monitor’s official mode table. That behavior may reflect a limitation in the current resolution and connection combination.
Check the older Display Adapter Properties menu
If the usual Windows refresh-rate dropdown does not resolve the problem, check the legacy display properties interface.
-
Open Settings and navigate to System, Display, and Advanced display.
-
Select Display adapter properties for the AOC monitor.
-
Open the Monitor tab in the properties window.
-
Inspect the Screen refresh rate dropdown.
-
Select 144Hz only if it is listed as a supported option.
-
Apply the setting and confirm that the picture remains stable.
AMD’s official display guidance documents this alternative route for selecting an available refresh rate. However, the list is still limited by the modes Windows and the graphics system recognize. If 144Hz is absent from both interfaces, repeatedly opening the same menu will not make an unsupported mode available.
Check the HDMI or DisplayPort connection
A connection problem can prevent Windows from offering a refresh rate that the monitor itself supports. The relevant factors include the monitor’s input specifications, the graphics card’s output, the cable, the selected resolution, and any adapter or dock in between.
Try a direct DisplayPort connection when supported
If your AOC monitor and graphics card both support DisplayPort, a direct DisplayPort connection is a useful troubleshooting test. Use a cable compatible with the supported display mode and connect it straight to the graphics card whenever practical.
This does not mean every AOC monitor requires DisplayPort for 144Hz. The correct input depends on the exact model, and some AOC displays support their specified 144Hz mode through HDMI as well. Follow the manual rather than assuming that one connector is universally required.
After changing the connection, select the correct monitor in Windows Advanced display and check the available refresh rates again.
If the 144Hz option returns, the previous connection path may have been the limiting factor. You should then check the old port, cable, adapter, or dock individually instead of replacing every component.
Check the specific HDMI port and cable
HDMI support varies between devices. A cable that works at 60Hz may not provide the signal configuration needed for 144Hz at a higher resolution, and the version printed on a cable package does not guarantee that every connected device supports the desired mode.
Check all of the following:
-
The monitor’s manual lists the selected HDMI input as supporting the desired resolution and refresh rate.
-
The graphics card or laptop output supports that same mode.
-
The cable meets the requirements of the complete display configuration.
-
An adapter, switch, or docking station is not limiting the signal.
If possible, temporarily remove any dock, KVM switch, receiver, or adapter from the connection. Test a direct connection between the AOC monitor and a compatible graphics output.
Do not buy a new cable immediately if your existing one already meets the manufacturer’s requirements. Testing with a known-compatible cable is a better diagnostic step than assuming the cable is responsible.
Check the graphics card’s physical output
On a desktop PC with a dedicated graphics card, make sure the monitor is connected to an appropriate port on that card. Connecting to a motherboard video output instead can result in a different display configuration, depending on the CPU, motherboard, firmware, and connected graphics hardware.
On a laptop, check the specifications for the exact HDMI or USB-C port. A USB-C connector does not automatically guarantee that the port supports video output at the required refresh rate. An external dock may also have a lower supported refresh rate than the laptop or monitor.
Once the connection is verified, test Windows again before moving to software troubleshooting.
Check the AOC monitor’s OSD settings
The monitor’s own menu can help establish whether it is receiving a signal at the expected resolution and refresh rate. Use the physical buttons or joystick on the AOC display to open its on-screen display.
Look for an information page that reports the active input signal. Some models show the current resolution and refresh rate, although menu layouts and reported details vary by model.
If the information screen reports 60Hz while Windows is supposed to be configured for 144Hz, check the selected display, cable path, graphics output, and Windows settings again. The monitor may be receiving a different mode from the one you expected.
If your manual documents an overclocking or maximum-refresh-rate option, follow that model-specific instruction. Otherwise, do not assume there is a hidden OSD switch that every AOC monitor needs before it can run at 144Hz.
You can also check the selected input source. If the monitor has multiple inputs, confirm that you are using the port connected to the computer and not another input with different capabilities.
Avoid randomly resetting color, gaming, or response-time options. They generally do not address a missing supported refresh-rate mode. If you suspect that a display setting is misconfigured, record the current configuration and reset only the relevant setting according to the manual.
Update the graphics driver and check AOC support downloads
If the model specifications, resolution, and connection all support 144Hz, but Windows still does not list it, investigate the graphics driver. The driver helps Windows communicate with the graphics hardware and can affect which display modes are available.
Update the NVIDIA or AMD graphics driver
Identify the graphics hardware in Device Manager by expanding Display adapters. Download an appropriate stable driver from the official NVIDIA or AMD website, or from your computer manufacturer’s support page if you use a laptop with a manufacturer-specific configuration.
If the missing refresh rate began immediately after a driver update, consider whether the update introduced the problem. Where available, the Windows driver rollback option may help restore the previous working configuration.
After updating or rolling back the driver, restart the computer when required. Reopen Windows Advanced display and check whether 144Hz appears.
Avoid installing multiple driver packages or using unofficial driver-updater utilities while troubleshooting. Changing one variable at a time makes it easier to identify the cause.
Should you install an AOC monitor driver?
Visit the official AOC support page for your exact model and check whether a monitor driver or other relevant support download is available. Install only software intended for that model and operating system.
However, a missing AOC monitor driver is not automatically the cause of a refresh-rate problem. Windows can use a generic Plug and Play monitor identification driver for many displays. Seeing the name “Generic PnP Monitor” does not, by itself, prove that the monitor cannot operate at 144Hz.
A model-specific driver may help Windows identify the display correctly in certain configurations, but it cannot expand the physical capabilities of the panel, graphics output, or cable connection.
If the refresh-rate problem appeared after a Windows update, check for relevant Windows updates and manufacturer driver updates. Avoid changing firmware or applying an unofficial monitor firmware package unless AOC explicitly provides instructions for your exact model.
What to do if your AOC monitor is still not showing 144Hz
If the earlier steps did not resolve the problem, use the symptoms to narrow down the remaining possibilities. Avoid repeating the same setting changes without identifying what the system is reporting.
| What you see | Likely explanation | Best next step |
|---|---|---|
| Windows lists only 60Hz | The selected mode, connection, driver, or model may limit the available refresh rate | Verify the native resolution and exact model specifications |
| Windows lists 120Hz but not 144Hz | The current signal configuration may not expose the 144Hz mode, or the model may not support it in that configuration | Check the manual and test a compatible direct connection |
| 144Hz appears after changing the cable or port | The previous connection path may have restricted the mode | Verify the old cable, output, and any adapter individually |
| Windows lists 144Hz but the AOC information screen reports a lower rate | The active display configuration may not match the intended setting | Recheck the selected display and confirm the applied mode |
| The monitor works at 144Hz, but a game offers only 60Hz | The game may use a different display mode or a restricted mode list | Check Windows’ active refresh rate and the game’s display settings |
| The screen goes black after changing the refresh rate | The new mode may not be accepted by the display | Wait for the operating system to revert, then select the previous stable mode |
Test the monitor with another compatible computer
If practical, connect the AOC monitor directly to another computer whose graphics output supports the required resolution and refresh rate. Use a compatible cable and check Windows Advanced display again.
If the second system offers 144Hz, the original PC’s graphics configuration, connection path, or driver becomes a stronger candidate for the problem.
If neither system exposes 144Hz, that does not automatically mean the monitor is faulty. Recheck the precise model, input requirements, and supported display modes first. If you have confirmed all of those details and the monitor still cannot expose its documented maximum, contact AOC support with the model number, connection type, resolution, and troubleshooting results.
Avoid forcing an unsupported custom resolution
Graphics utilities can create custom display modes, but this should not be the first response to a missing 144Hz option. NVIDIA specifically warns that using custom timings beyond a display manufacturer’s advertised specifications may cause permanent damage and may affect the warranty.
If a mode is absent, first establish whether the monitor’s documentation supports it through the connection you are using. A custom-resolution tool should not be used to bypass a known hardware or compatibility limitation.
Frequently asked questions
Why is my AOC gaming monitor stuck at 60Hz?
The selected Windows refresh rate may still be 60Hz, the resolution may restrict the available modes, or the cable and port combination may not expose 144Hz. Confirm the exact AOC model supports the desired mode, select the monitor in Advanced display, and check the direct connection before reinstalling drivers.
Does every AOC gaming monitor support 144Hz?
No. AOC sells displays with different maximum refresh rates. Check the full model number and the manufacturer’s specifications instead of relying on the AOC brand or the phrase “gaming monitor.”
Can an HDMI connection support 144Hz on an AOC monitor?
It depends on the exact monitor, input, resolution, and connected graphics hardware. Some models support 144Hz through HDMI, while other configurations may require a different input. Follow the manual for your specific model and use a compatible cable.
Why is my AOC monitor showing 120Hz instead of 144Hz?
The active resolution, connection path, graphics configuration, or supported input mode may limit the available refresh rates. Check the manufacturer’s supported mode table and test the monitor with a suitable direct connection. If the exact model supports only 120Hz, no Windows setting can turn it into a native 144Hz display.
Does FreeSync need to be enabled for 144Hz to appear?
Do not assume that FreeSync is the cause of a missing 144Hz option. Variable refresh rate and the display’s selectable refresh-rate modes are related but distinct settings. Check the monitor specifications, Windows configuration, and input connection before changing FreeSync settings.
Should I buy a new cable or monitor?
Not without confirming the limitation. Test a known-compatible cable and direct connection first. If the manual confirms that your AOC model supports 144Hz but the mode remains unavailable on a suitable system, contact AOC support before spending money on a replacement monitor.
Final verdict
When an AOC monitor does not show 144Hz, begin with the exact model and its supported display modes. Set the native resolution, select the correct screen in Windows, and verify the HDMI or DisplayPort connection before troubleshooting drivers or game settings. If the hardware supports 144Hz, these checks can reveal why the option is missing. If the monitor’s specifications do not support that rate, forcing a custom mode is not a safe substitute for a display designed to run at 144Hz.
