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Source: Windows Central
Tóm lược đại ý quan trọng trong bài
- How to fix external monitor connection issues via hardware troubleshooting
- 1. ExpressVPN: The best VPN available right now
- Second monitor
- How to fix external monitor connection issues via Settings
- Force second display detection
- Connect wireless external display
- How to fix external monitor connection issues via latest graphics drivers
- Update graphics driver
- Reinstall graphics driver
- Rollback graphics driver
- Update graphics driver with manufacturer control panel
- Multi-monitor tư vấn
- More Windows resources
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On Windows 10, setting up a second monitor is a convenient way to expand the desktop canvas to work with multiple apps and play games on your máy tính or desktop computer.
Although connecting an external display is typically a straightforward process, sometimes, Windows 10 may not detect older displays or second monitors due to drivers or hardware-related problems. However, if your device has this problem, there are several troubleshooting steps (including checking the connection and installing the correct drivers) to fix the issue quickly.
In this Windows 10 guide, we will walk you through three practical ways to troubleshoot and fix issues that may be blocking the system from detecting the second monitor automatically.
- How to fix external monitor connection issues via hardware troubleshooting
- How to fix external monitor connection issues via Settings
- How to fix external monitor connection issues via latest graphics driver
How to fix external monitor connection issues via hardware troubleshooting
When the desktop or máy tính does not detect the second external monitor, it could be a problem with the software, but it might also be an issue with the physical connection.
If the monitor does not show up in the settings, try these steps before changing the configuration settings on Windows 10:
- Confirm the monitor is connected to a power source.
- Confirm the monitor is turned on.
- Turn off then turn on the computer to refresh the connection.
- Use the monitor’s built-in controls and select the correct input port.
- Check the signal cable connection between the monitor and the PC’s graphics card.
- Disconnect the signal cable from both ends, wait about a minute, and reconnect it again firmly.
- Try a different signal cable to confirm you are not dealing with a bad cable.
- DisplayPort and HDMI come in different versions, which means you must also check the manufacturer for requirement details to ensure you have the correct cable.
- Change ports if the monitor and graphics card include multiple ports.
- Connect the monitor to another computer to see whether the problem is with the monitor.
- Connect another known working monitor to determine that the issue is not the graphics card.
- Disconnect all peripherals (such as printers, cameras, and USB devices) to confirm none of the other devices are conflicting with the monitor.
- If you have a Surface Pro 7 connected to a dock station, disconnect it and try to connect the monitor directly into the tablet to confirm the problem is not the dock.
- Update the external monitor firmware to help fix bugs and compatibility issues (uncommon).
If the basic troubleshooting steps outlined above do not fix the second monitor, you can troubleshoot the software.
In the sự kiện that the problem is the monitor, or you are in the market for a new one, the HP Z27 is our top pick right now. You can find more choices in our best 4K monitor roundup.
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Second monitor
HP Z27
The best monitor for most users
The HP Z27 is a 27-inch monitor excellent for creators and general-purpose tasks because of its slim design, amazing 4K picture quality, and USB-C connectivity alongside the usual DisplayPort and HDMI. The display even includes a built-in hub with USB-A 3.0 ports.
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How to fix external monitor connection issues via Settings
After concluding that there isn’t a physical problem with the connection, monitor, or device, you can use the Settings app to force the system to detect the second monitor.
Force second display detection
To detect a second monitor manually on Windows 10, use these steps:
Under the “Multiple displays” section, click the Detect button to connect to the external monitor.
Source: Windows Central
(Optional) Under the “Rearrange your displays” section, click the Detect button in the bottom-right corner (if applicable).
Quick note: If you have only one monitor, the option will not be present since it’s only available when connecting multiple displays.
Once you complete the steps, Windows 10 should now detect the external monitor.
Connect wireless external display
To connect a wireless display on Windows 10 as a secondary screen, use these steps:
Click the Add Bluetooth or other device button.
Source: Windows Central
Select the Wireless display or dock option.
Source: Windows Central
After you complete the steps, the wireless display will be detected as a new external display on the computer.
How to fix external monitor connection issues via latest graphics drivers
If the computer happens to have a buggy, outdated, or corrupted graphics driver, this can cause problems that may prevent Windows 10 from detecting and configuring a second monitor. The easiest method to get around this problem is to update, reinstall, or downgrade the driver to resolve the connection problem between the máy tính or desktop and the external monitor.
Update graphics driver
To update the graphics card driver via Windows Update, use these steps:
Click the View optional updates option.
Source: Windows Central
Quick tip: If the option is not available, it means that Windows Update does not have a newer driver available for tải về.
Select the newer graphics driver to install on Windows 10.
Source: Windows Central
Once you complete the steps, Windows Update will tải về and install the graphics driver fixing the detection problem with the monitor.
If Windows Update does not have a newer driver version, check the manufacturer tư vấn website tải về and install a more recent version (if available).
Reinstall graphics driver
To reinstall a damaged video driver on Windows 10, use these steps:
Right-click the adapter and select the Uninstall device option.
Source: Windows Central
Click the Uninstall button.
Source: Windows Central
Open Device Manager again.
Quick note: Windows 10 should detect the monitor again automatically. If it’s not the case, use Device Manager to scan for hardware changes to force the system to reinstall the display.
Right-click the computer name and select the Scan for hardware changes option.
Source: Windows Central
After you complete the steps, Windows 10 should detect and reinstall the driver automatically. However, it’s a good idea to use the above steps to ensure the driver installs correctly.
Rollback graphics driver
If the computer was recently updated or you upgraded the graphics driver manually, and Windows 10 cannot detect the second monitor, rolling back to the previous driver may resolve the issue.
To remove and reinstall an older version of a graphics driver on Windows 10, use these steps:
Right-click the graphics adapter, and select the Properties option.
Source: Windows Central
Click the Roll Back Driver button.
Source: Windows Central
Quick tip: If the option is not available, you cannot use this rollback process. However, you might still be able to use an older version from the device manufacturer’s tư vấn website (if available).
Click the Yes button.
Source: Windows Central
Once you complete the steps, Windows 10 should detect and start drawing up content on the external monitor.
Update graphics driver with manufacturer control panel
Windows 10 can detect and set up drivers for most graphics adapters, but the versions available through Windows Update are not usually the more recent ones. If you have to install the latest driver, companies like NVIDIA, AMD, and Intel offer tools to quickly install the latest updates that may help to fix external display problems.
These are the tải về links:
- Intel Driver & Support Assistant
- NVIDIA GeForce Experience
- AMD Radeon Software Adrenalin Edition
If you use the manufacturer’s control panel, the installation is simple. You only need to tải về and double-click the installer using the above links that correspond to the adapter you have, continue with the on-screen directions to complete the setup, and then check for updates.
Alternatively, you can tải về the drivers directly from the manufacturer’s tư vấn website using their instructions. You can use the links below to find the drivers:
- Intel
- NVIDIA
- AMD
To check the graphics card vendor and driver version on Windows 10, use these steps:
Confirm the Adapter Type and Driver Version information to determine the driver’s card model and current version.
Source: Windows Central
Once you complete the steps, use the above links to find, tải về, and install the correct driver.
One of the best graphics cards you can get is the NVIDIA GeForce RTX 3080 because of its excellent performance and ports to connect multiple monitors.
Multi-monitor tư vấn
NVIDIA GeForce RTX 3080
The RTX 3080 offers multi-monitor tư vấn
If you must replace your graphics card, the RTX 3080 is a great option. Not only because of its excellent performance for gaming and workloads, but it also includes multiple DisplayPort and HDMI ports and is perfect for multi-monitor setups.
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Finally, consider that manufacturers (for example, Dell, HP, Razer, Acer, and Microsoft) usually change the original drivers to optimize them for their desktops and laptops. This means if you have a branded computer (also known as an Original Equipment Manufacturer (OEM) computer), you should always think first about using the graphics driver available through the device manufacturer before trying those available through the graphics card manufacturer to minimize the chances of running into other problems.
More Windows resources
For more helpful articles, coverage, and answers to common questions about Windows 10 and Windows 11, visit the following resources:
- Windows 10 on Windows Central All you need to know
- Windows 10 help, tips, and tricks
- Windows 11 on Windows Central All you need to know
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