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A 100Hz monitor may show 60Hz because Windows selected that rate, the desired 100Hz mode is unavailable at your current resolution, or something in the connection path limits the signal. Check the selected display in Windows first, then verify the monitor’s model-specific input and resolution limits and test the connection directly. A 100Hz label alone does not guarantee that every input or setup supports 100Hz at every resolution.
Check the refresh rate Windows has selected
- Open Settings > System > Display > Advanced display. Microsoft’s instructions apply to Windows 10 and Windows 11; labels can vary slightly by build. Microsoft’s refresh-rate guide explains the available settings.
- If you have more than one display, choose the 100Hz monitor in the display selector.
- Check the refresh-rate menu. If 100 Hz is listed, select it and confirm the Windows readout shows the intended rate.
The available rates depend on the selected display and its supported modes. If a rate has an asterisk, Windows indicates that it does not support the current resolution; choosing it may change the resolution. A game’s frame-rate counter is not a substitute for checking the selected display’s refresh rate in Advanced display.
Confirm that the monitor supports 100Hz in your intended mode
Find the exact monitor model number and check its manual or manufacturer specifications. Confirm both the maximum refresh rate at your chosen resolution and whether that mode works through the input you are using, such as HDMI, DisplayPort, or USB-C. An advertised maximum does not establish support for every input-resolution combination. General Windows guidance cannot determine the limits of an unspecified monitor.
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Also confirm that the monitor is set to the input connected to your computer. MSI’s external-display troubleshooting guidance includes checking the monitor’s input source when refresh rate or resolution is below expectations.
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Test the full connection path
The signal passes through more than the cable: the monitor input, computer or GPU output, cable, and any dock, adapter, KVM switch, or receiver can affect which modes are available. Change one part at a time so you can identify where the limitation lies.
- Reseat the cable at both ends.
- If the monitor is connected through a dock, adapter, KVM, or receiver, temporarily connect it directly to the computer. Use a computer output and monitor input documented to support 100Hz at your intended resolution.
- Try another supported output on the computer or input on the monitor.
- If available, test with a known-good cable that supports the required resolution and refresh rate.
- Test the monitor on another system, or connect another display to the same computer. These checks can help isolate whether the limitation is on the monitor side or computer side.
Microsoft’s external-monitor troubleshooting guide recommends checking the cable, trying another video output, and testing the monitor on another system. Replacing a cable is a diagnostic option, not a guaranteed fix; choose one only after checking the exact ports and required mode.
Rank #2
- CRISP CLARITY: This 22 inch class (21.5″ viewable) Philips V line monitor delivers crisp Full HD 1920x1080 visuals. Enjoy movies, shows and videos with remarkable detail
- 100HZ FAST REFRESH RATE: 100Hz brings your favorite movies and video games to life. Stream, binge, and play effortlessly
- SMOOTH ACTION WITH ADAPTIVE-SYNC: Adaptive-Sync technology ensures fluid action sequences and rapid response time. Every frame will be rendered smoothly with crystal clarity and without stutter
- INCREDIBLE CONTRAST: The VA panel produces brighter whites and deeper blacks. You get true-to-life images and more gradients with 16.7 million colors
- THE PERFECT VIEW: The 178/178 degree extra wide viewing angle prevents the shifting of colors when viewed from an offset angle, so you always get consistent colors
Check the graphics driver if the mode disappeared after an update
If 100Hz was available before a graphics or system update but has since disappeared, investigate the display driver. Microsoft’s external-monitor troubleshooting options include rolling back a driver when problems follow an update and reinstalling it if needed. Use the instructions for your specific computer or GPU.
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Rank #3
- CURVED FOR ENHANCED ENGAGEMENT: An immersive viewing experience with a curved monitor that wraps more closely around your field of vision; It creates a wider view, enhancing depth perception and minimizing peripheral distraction
- SMOOTH PERFORMANCE FOR SEAMLESS CONTENT: Stay in the action when playing games, watching videos, or working on creative projects; The 100Hz refresh rate reduces lag and motion blur so you don't miss a thing in fast-paced moments¹
- MORE GAMING POWER: Gain the edge with optimizable game settings; Color and image contrast can be adjusted to see scenes more vividly and spot enemies hiding in the dark; Game Mode adjusts any game to fill the screen so you can view every detail²
- KEEP IT EASY ON THE EYES: Care for your eyes and stay comfortable, even during long sessions; Advanced eye comfort technology certified by TÜV reduces eye strain by minimizing blue light and reducing irritating screen flicker²
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Retest and narrow down what is limiting 100Hz
After each change, return to Settings > System > Display > Advanced display, select the correct monitor, set your intended resolution, and check whether 100Hz appears and is selected. If it remains unavailable, note these details before contacting the monitor or computer manufacturer:
- Monitor model and intended resolution
- Computer or GPU model and the output port in use
- Monitor input selected
- Cable type and every dock, adapter, KVM, or receiver in the signal path
- Refresh rates listed in Advanced display
Compare the setup across mode, monitor input, computer output, signal path, and driver state. Without those model and connection details, there is no reliable way to name one universal cause or rank the possible causes by likelihood.
Rank #4
- VIVID COLORS: Experience stunning colors across the entire display with the IPS panel. Colors remain bright and clear across the screen, even when you change angles. Tones and shades are represented consistently and beautifully with less color washing.
- SMOOTH PERFORMANCE: Stay in the action when playing games, watching videos, or working on creative projects. The 100Hz refresh rate reduces lag and motion blur so you don't miss a thing in fast-paced moments.¹
- MORE GAMING POWER: Gain a competitive edge with optimizable game settings. Color and image contrast can be instantly adjusted to see scenes more clearly, while Game Mode adjusts any game to fill your screen with every detail in view.
- EASY ON THE EYES: Protect your vision and stay comfortable, even during long sessions. Stay focused on your work with reduced blue light and screen flicker.²
- A MODERN AESTHETIC: Featuring a super-slim design with ultra-thin border bezels, this monitor enhances any setup with a sleek, modern look. Enjoy a lightweight and stylish addition to any environment.
Windows version note
Microsoft’s refresh-rate guidance covers Windows 10 and Windows 11. Microsoft states that Windows 10 support ended on October 14, 2025. Interface wording may vary slightly across Windows builds.
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