How to enable System Monitor in Windows 11 and optimize the display

If you've just made the jump to Windows 11 and have started to notice problems with the resolution, refresh rate, or behavior of your monitorsYou're not the only one experiencing this. Between interface changes, new advanced display features, and details like presence detection, it's normal for everything to seem a bit chaotic at first, especially if you play competitive games or use multiple devices on the same monitor. To diagnose the issue, you can know your PC specifications.

In this article we will look at it in great detail How to properly activate and configure the “System Monitor” in Windows 11Understanding what refresh rate is, how to take advantage of features like Dynamic Refresh Rate (DRR), how to avoid typical problems when going from 60 Hz to 144 Hz, and what settings to adjust when using multiple devices on the same monitor (for example, a Mac and a Windows 11 PC connected to the same panel with KVM).

What exactly is the “System Monitor” in Windows 11?

When we talk about "System Monitor" in Windows 11, we are referring, in practice, to all the screen and monitor management options offered by the systemFrom resolution and refresh rate to advanced settings like presence detection and dynamic refresh rate, it's not just "the screen" but the set of tools the system uses to control how images are displayed and updated.

In Windows 11, display settings have been reorganized to be clearer, but they also include new features that did not exist in Windows 10This means that, after updating, some people may experience different behavior in games, on external monitors, or on laptops with high refresh rate panels, and it's advisable to detect system degradation.

Among the key components of this “System Monitor” we find Advanced display settings, DRR, VRR support (Variable refresh rate) and presence sensor settings on compatible devices. All of this influences how the screen looks, feels, and responds on a daily basis.

In addition, we must bear in mind that Equipment and monitor manufacturers (Dell, Alienware, Acer, Gigabyte, etc.) They add their own drivers and tools, which can either help or complicate the setup, depending on how everything is installed and updated.

The refresh rate: why it's so important in Windows 11

The basis of almost all the visual problems and improvements you'll notice when configuring your system monitor is the screen refresh rateThis value, measured in hertz (Hz), indicates how many times per second the image on the monitor is updated: a 60 Hz screen refreshes the image 60 times per second, a 144 Hz screen updates it 144 times, and so on.

The higher the refresh rate, The whole movement seems more fluid and smooth.Scrolling through web pages, moving windows, drawing with a digital pen, or playing games are all examples of high-frequency motion blur. Conversely, lower frequencies can cause a "dragging" sensation, more motion blur, and, in some cases, eye strain.

In Windows 11, these frequencies are managed from the screen of advanced screen settingsDepending on the monitor, graphics card, and connection type (HDMI, DisplayPort, USB-C), you'll see a list of available refresh rates. Not all resolution and refresh rate combinations are compatible, and that's where many headaches arise. Additionally, to rule out thermal issues that might affect performance, you can measure CPU and GPU temperature.

For gamers, the update frequency is critical: Going from 60 Hz to 120/144 Hz makes a huge difference in response and immersion.However, the system needs to coordinate with the monitor and GPU so that this frequency is actually applied at the resolution you want to use, both on the desktop and in-game.

Windows 11 also incorporates support for technologies such as VRR (variable refresh rate)which allow the screen to dynamically adjust the refresh rate according to the frames generated by the GPU, reducing tearing and improving the gaming experience without you having to constantly touch the settings.

Real advantages of changing the update frequency

Changing the screen refresh rate in Windows 11 isn't just a whim for gamers. It has direct impact on the fluidity of everything you see and on energy consumptionDepending on what you do with the equipment, you'll want to prioritize one thing or another.

In the realm of games, a high frequency is often key. A monitor with a refresh rate of 120 Hz or 144 Hz reduces motion blur and screen tearing.This makes the image appear much sharper in fast-paced scenes and reduces apparent input lag. This can provide a slight competitive advantage in games like shooters or esports titles where every millisecond counts.

A quick panel is also appreciated when browsing the internet, reading long documents, or using handwritten input with a stylus. The scrolling looks much smoother and the transitions are more pleasant.This can reduce eye strain and make prolonged work in front of a screen less tiring. If you notice that your computer is underperforming, it's worth checking if Your antivirus is slowing down the system.

On the other hand, Lowering the refresh rate can help save battery on laptops and tablets. If you're simply writing text, replying to emails, or viewing static content, you don't need 120 or 144 Hz constantly. Windows 11 also introduces tools to automate this balance, such as DRR.

In short, playing with the update frequency allows you to adapt to both high-performance scenarios as well as situations where you prioritize autonomyThe trick is knowing where to change it and what effect it has on your specific equipment.

How to change the refresh rate in Windows 11 step by step

To truly unlock the potential of your system monitor in Windows 11, you absolutely must touch the advanced screen settingsFrom there you choose which refresh rate you want to use, and if you have multiple monitors, which one you want to adjust.

The general procedure is simple, although the limitations of each monitor then come into play:

1. Open advanced display settings
Go to the Start button and enter Settings > System > DisplayIn this section, scroll down until you find the option to Advanced display settingsThat's where you'll see the technical details of the selected monitor.

2. Choose the correct screen if you use multiple screens.
If you have more than one monitor connected, you'll see a dropdown menu like this: Choose screenIt is essential that you select there. the screen on which you want to change the refresh ratebecause each one has its own list of supported resolutions and refresh rates.

3. Check the current information on the screen
The information panel displays the current resolution and configured refresh rate At that point, you'll also find out if the screen supports variable refresh rate (VRR). It's a good place to check if your monitor is actually running at 60, 120, 144 Hz, or whatever you expect.

4. Change the update frequency
Right below you will see the section Choosing a refresh rate o Update frequencyOpen the drop-down menu and select Choose the speed you want to use from those listedOnly those that your monitor, GPU, and connection type support for that resolution will appear.

5. Take into account the hardware limitations
Not all monitors or ports offer the same options. A laptop might only offer 120Hz on its internal display, while an external monitor might only reach 144Hz using DisplayPort. Some Dell, Alienware, XPS, Inspiron, Vostro or other ranges of computers They allow high rates in certain models or specific combinations of resolution and connection.

If your main goal is to improve the gaming experience, it's worth checking if your monitor It supports VRR or technologies like G-Sync/FreeSync.Because many modern games automatically take advantage of these features, and you might not need to manually adjust the frequency as much.

Dynamic Refresh Rate (DRR) in Windows 11

One of the most interesting new features of the system monitor in Windows 11 is the Dynamic Refresh Rate (DRR)This function automates the balance between fluidity and battery life we ​​mentioned earlier, without you having to manually adjust anything each time you switch tasks.

The idea is simple: Windows 11 increases the refresh rate when you need maximum smoothness (games, intensive browsing, handwriting input, etc.) and reduces it when you are performing less visually demanding tasks (reading, writing, office work), to save energy.

With DRR enabled, the system can automatically switch between, for example, 60 Hz and 120 Hz depending on what you're doing. This is especially useful in laptops and hybrid devices with high refresh rate displayswhere every minute of battery life counts.

To enable or disable DRR, the path in Windows 11 is as follows:

1. Open the appropriate configuration path
Go to Start > Settings > System > Display > Advanced displayThis path takes you to the advanced display options where the DRR switch appears if your hardware supports it.

2. Enable or disable dynamic refresh rate
Within Advanced Display, look for the control Dynamic refresh rate and move the toggle switch to activate (On) or deactivate (Off) DRRIf you don't see it, it's very likely that your monitor or GPU isn't compatible with this particular feature.

3. Take into account the hardware requirements
Having Windows 11 installed is not enough: The panel and graphics system must support DRRMany modern laptop models do include it, especially some professional and gaming models, but older computers or standard external monitors will not offer this option.

This feature can make a big difference in teams where you want Enjoy gaming or smooth commutes without sacrificing hours of battery lifeIt's a good ally for the system to "think for you" regarding the use of the refresh rate.

Case study: problems when upgrading from Windows 10 to Windows 11 with 144 Hz

When upgrading to Windows 11, many people encounter some unusual situations regarding the refresh rate. A clear example is that of a user who, on Windows 10, I played at 1920 x 1080, 16:9 at 144 Hz without any problems in titles like ValorantAnd after installing Windows 11, I could only use 60 Hz at that same resolution.

In this scenario, the system displayed something curious in the advanced display settings: “Desktop mode” appeared at 1920 x 1080 at 60 Hz, Whereas the “Active signal mode” was listed at 3840 x 2160 at 60 HzIn other words, Windows was internally handling a different signal than what it appeared at first glance.

When attempting to change the refresh rate from the bottom of that window, the user could see Multiple options from 25 Hz to 144 HzFrom 70.07 Hz upwards, an asterisk appeared next to each higher frequency. After investigating, he discovered that this symbol indicated that those frequencies were modes compatible with the monitor and graphics cardso they should work properly.

However, when selecting 144 Hz, the screen flickered and the resolution scale changed: the Desktop mode was changed to 1680 x 1050 at 144 Hz and the Active signal mode was set to 1920 x 1080 at 144 HzIn other words, the system was internally upscaling, which affected both the sharpness and the options available within the games.

Before the update, the default settings in Windows 10 and in the graphics card control panel (in this case, an Nvidia GeForce RTX 3060) were 1920 x 1080 at 144 Hz without any tricksand the game itself directly offered that combination as an option.

In Windows 11, however, the Nvidia's control panel also did not allow selecting 144 Hz at 1920 x 1080It was only possible to maintain 60 Hz at that resolution and increase to 144 Hz only by lowering the resolution to 1680 x 1050. This difference points to a mix of factors: GPU drivers, monitor drivers (in this case an Acer Nitro VG240Y S), changes in internal video mode management in Windows 11, and possible scaling settings.

In a situation like this, it's worth reviewing calmly and check using tools like OpenHardwareMonitor in PowerShell:

• Ensure your graphics card drivers are up to date, by downloading the latest Windows 11 compatible drivers directly from the Nvidia or AMD website.
• Ensure the monitor has the appropriate drivers or .inf file installed. so that Windows correctly recognizes all supported modes.
• Ensure that the cable and port used support 144 Hz at the desired resolution (DisplayPort is often more flexible than certain HDMI).
• That there are no custom resolution profiles conflicting information in the GPU control panel.

It's also useful to check if the game (like Valorant or other titles) is correctly reading the list of modes supported by the system After updating to Windows 11, in some cases it's advisable to delete game configuration files or force the graphics settings to regenerate and use a overlay with system data to verify the actual rates that come into the game.

Using multiple devices on the same monitor: active input problem

Another area where the system monitor can cause problems in Windows 11 is when Connect multiple devices to the same monitor with integrated KVM, such as a MacBook via USB-C and a Windows 11 laptop via DisplayPort, all managed from a monitor switch like the Gigabyte M32U.

In a typical scenario, when the monitor is using the DisplayPort input (i.e., displaying the image from the Windows PC), the MacBook behaves as expected: you can leave it open, use it with its own screen, and The windows do not "jump" to the external monitor if this is not selected as the active output.

The problem arises when you switch the monitor input to USB-C to view the Mac: Windows 11 continues to detect the monitor as active through DisplayPort, even though that port is no longer selected on the monitor itself. As a result, the system continues to believe it has an external display available, and many windows keep opening on that "phantom" screen, becoming inaccessible because you're not actually seeing it.

For now, a quick solution is Physically disconnect the DisplayPort cable from the Windows laptop. When you want to use the USB-C port with your MacBook, you can easily disconnect the monitor, but that's clearly inconvenient if you frequently switch computers. The logical question is whether there's a way for the system to recognize the monitor as "off" or disconnected when you switch inputs.

In practice, this behavior depends largely on how the monitor manages the EDID and the signal to each portMany monitors maintain a connection to the PC even when the input is inactive, allowing for quick source changes without re-establishing the entire connection. From Windows' perspective, the monitor is still present, which is why it doesn't reposition the windows.

As a software solution, you can explore the following and use tools such as multi-monitor management:

• Use mirrored or single screen settings in Windows 11 (for example, by forcing the use of only the internal display when the monitor is not active).
• Resort to third party tools that allow you to force the logical shutdown of a screen or move all windows to a specific monitor with a keyboard shortcut.
• Configure shortcuts on your own monitor or KVM management application, if the manufacturer offers specific software to control EDID inputs and behavior.

Currently, there's no standard setting in Windows 11 that automatically detects when the monitor has switched to a different physical input and hides that screen as if it were disconnected. This is an area where the interaction between hardware and the operating system still has room for improvement.

Presence detection in Windows 11 and its relationship with the screen

Some computers with Windows 11 include a Presence sensor This sensor is part of the system monitor's advanced features. It allows the device to detect whether you are in front of the screen or have moved away, and to act accordingly to improve security and power consumption.

If your device is compatible, you will be able to configure that The screen turns off automatically when you leave and that the device reactivates almost instantly when you approach it again. This is especially useful on professional laptops or shared work devices, where you want to minimize data exposure if you get up for a moment.

To check if your device has this feature, go to Settings and look for the options. presence detection within the energy and battery sectionIf they appear, you can customize this behavior to your liking.

The general steps to adjust presence settings in Windows 11 are:

1. Access Start/Power and Battery
Go to Start, type “settings” and go to Settings > System > Power & batteryFrom there you can manage various aspects related to energy and screen behavior.

2. Adjust Display and Sleep
Within the battery and power section, go to Screen and suspensionHere you will see options related to the time that must pass before turning off the screen or suspending the PC, among others.

3. Activate the options related to presence
In this section you will find controls such as Automatically turn off the screen when I leave y Automatically reactivate the device when I approach. You activate one or both settings depending on how you want your team to respond.

4. Configure the advanced Presence Detection parameters
When selecting More options Alongside these functions, the specific Presence Detection settings open, where you can fine-tune:

• The distance from which the system considers you have left of the team (They think I've left when I'm so far away).
• The waiting time before turning off the screen after detecting that you are no longer there (Next, turn off the screen after this amount of time.).
• You should lock the device when exiting when an external display is connected., very useful for those who work with additional monitors.
• The distance at which it must be to reactivate the equipment (Reactivate my device when I'm this close).
• It needs to reactivate when you approach, even with an external screen connected..
• It should avoid reactivating when battery saver mode is enabled.to avoid wasting extra energy.

All of this gives you pretty fine control over how the system manages the screen depending on whether you're present or not, which directly influences the Physical security of the equipment and energy consumption.

Control of applications that can use the presence sensor

Like any sensor that interacts with your environment, presence detection also has a presence aspect. privacy and access controlWindows 11 lets you decide which apps can use that sensor and which can't, to prevent misuse or programs you don't need constantly checking your location.

To manage which apps can access the sensor, go to the privacy and security section:

1. Go to the privacy section
From the Start menu, open Settings > Privacy & security > Presence detectionThis is where all the settings related to this specific sensor are grouped.

2. Enable general access to the sensor
Check that Presence detection access y Allow apps to access presence detection be in EnabledIf these options are disabled, no application will be able to use the sensor.

3. Decide which specific apps can use it
Below you'll see a list of apps that support the presence sensor. You can go individually activating or deactivating access Depending on how much you trust the app. If you don't see an app on the list, it's probably a traditional desktop app.

4. Control access to desktop applications
Desktop applications cannot be switched one by one, but you can use the setting Allow desktop applications to access presence detection all with to authorize or block these types of programs in bulkIt's a way to ensure that no classic software uses the sensor if you don't want it to.

If, after setting all this up, you notice that the presence detection It's not working as it should.You can report the problem through the Windows Feedback Hub. From there, Microsoft collects feedback and diagnostic data to refine the behavior in future system updates.

Understanding and adjusting all these components of the system monitor in Windows 11—refresh rate, DDR, presence detection, multi-input and multi-monitor behavior, as well as interaction with GPUs and drivers from manufacturers like Dell, Alienware, Acer, and Gigabyte—allows you to get much more out of your computer. By keeping your drivers up to date, reviewing advanced display options, and fine-tuning intelligent presence features, you can achieve an experience that combines Maximum fluidity in games and demanding tasks, good battery life in laptops, and added security and convenience in daily useAnd, if you use OLED panels, learn to Take care of your OLED monitor.