[Motherboard]Troubleshooting-How to fix Motherboard WI-FI connect problem
[Motherboard]Troubleshooting-How to fix Motherboard WI-FI connect problem
It is necessary to confirm whether the problem is the wireless controller, the network equipment (Switch / route etc.) or the ISP
This troubleshooting is for the abnormal wireless network of the motherboard (for example, the Wi Fi icon disappears, Wi Fi is unable to connect, Wi Fi has no signal and other common symptoms)
Suppose you have a motherboard with WI-FI and a smart phone in your home, both connect with Wi Fi
If the motherboard wi-fi and smart phones both are unable to connect to the Internet. It is usually caused by network devices or ISP. It is recommended to try to restart the network devices, or contact the ISP for service
The motherboard cannot connect to the Internet, but the smart phone can → Please follow below troubleshooting
Table of Contents:
A: Check whether the motherboard supports wireless function
B: Please go to the corresponding instruction based on the current Windows operating system on your computer:
Windows 11
Windows 10
C: Q&A
A：Check whether the motherboard supports wireless functionality
Go to the ASUS official website to confirm whether your motherboard supports wireless function.
1）Click icon，enter the model name of your motherboard
(As an example：TUF GAMING B550-PLUS WI-FI)
2). Click[Tech Specs], confirm whether [Wireless Data Network] is supported, as shown below:
B: Please go to the corresponding instruction based on the current Windows operating system on your computer:
Windows 11
Table of Contents:
1. Make sure the wireless function is activated
2. Confirm and connect to wireless network
3. Execute the Windows Network Troubleshooter
4. Restore BIOS settings
5. Update Wireless driver
6. Restore network settings to default values
7. Wireless network adapter with Yellow Exclamation in Device Manager
8. Update BIOS
1. Make sure the wireless function is activated
If you click the network connection icon, the Wi Fi and action hotspot icons are not displayed,
please confirm whether the Wi Fi option in the device manager or in the BIOS is turned off, refer to Q2 & A2 
2. Confirm and connect to WI-FI
a. Click the [Network and Internet] icon in the taskbar 1, and confirm whether the WLAN setting is [On] 2, select the wireless name to be connected 3
For example, choose the name of the wireless network as follows: ASUS
Note: The Wi-Fi icon displays in blue to indicate that it is on. 
b. Click to connect, as shown in Figure 4 below
c. Enter the network security key, as shown in Figure 5 below. After the input is completed, click Next, as shown in Figure 6 below:
d. After the connection is successful, "Connected, safe" will be displayed, as shown in Figure 7 below:
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
3. Execute the Windows Network Troubleshooter
In the [Start] menu, click [Settings]. 
Click [System]-[Troubleshooting]-[Other Troubleshooters].
Find Network and Internet and click [Run].
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
4. Restore BIOS settings
Try to reset BIOS to default settings, here you can learn more about FAQ:How to restore BIOS settings.
If the problem persists, please continue the next troubleshooting step.
Back to Table of Contents
5. Update Wireless driver
Update the Wireless and Bluetooth drivers through Device Manager：
If the versions are too different between the Wireless and Bluetooth drivers, it may cause a software compatible issue. So, we recommend updating both drivers to the latest version.
a. Right-click on [Start] 1 and click [Device Manager] 2.
b. Click the arrow 3 next to the [Network adapters] device type. Right-click [MediaTek Wi-Fi 6 MT7921 Wireless LAN Card]4 and click [Uninstall Device]5.
Note: The name of the wireless network device may be different on different motherboard models.
c. Check [Attempt to remove the driver for this device] 6 and click [Uninstall] 7.
d. Click the arrow 8 next to the [Bluetooth] device type. Right-click [MediaTek Bluetooth Adapter] 9 and click [Uninstall Device]10.
Note: The name of the Bluetooth device may be different on motherboards with different models. 
e. Check [Attempt to remove the driver for this device]11 and click [Uninstall]12.
f. After uninstalling the network adapters and Bluetooth in Device Manager, click [Action] 13 and then select [Scan for hardware changes] 14.
The computer will reinstall the wireless network and Bluetooth drivers and show up again in the Network Adapters and Bluetooth Device categories. 
g. If the wireless network and Bluetooth driver cannot be automatically updated through the device manager, please go to the ASUS official website to download the driver and install it. Please refer to FAQ:[Motherboard] How to install motherboard drivers and utilities
Note: Please find the manufacturer driver corresponding to your motherboard's wireless network card and Bluetooth device. This example manufacturer is [Intel]. 
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
6. Restore network settings to default values
a. Click [Start]1 and click [Settings]2 
b. Click [Network & Internet] 3, [Advanced Network Settings] 4, and click [Network Reset] 5
c. Click [Reset Now]6 and select [Yes]7. After the network reset is complete, your computer will restart
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
7. An exclamation mark appears on the wireless network interface card in the device manager
If you find a yellow exclamation mark appears on the wireless network interface card in the device administrator, as shown in the following figure:
Please try the following steps to fix
a. Turn off the computer power, unplug the power cord, and perform CMOS reset steps, refer to FAQ: How to clear CMOS
b. After reconnecting the power supply and turning on the computer, please confirm whether the wireless network interface card in the device manager is back to normal. 
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
8. Update BIOS
If you still have problems with the wireless network connection after troubleshooting the above steps, please update the motherboard BIOS to the latest version. Refer to FAQ: [Motherboard] How to update BIOS of the motherboard ?(Include different generation CPU)
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
If you have completed the above troubleshooting steps but the problem is still not resolved, it may be caused by the network service provider or network equipment (including modems, network cables, and wireless sharers). It is recommended that you contact your network provider or troubleshoot your network equipment. Learn more about ASUS router troubleshooting:
[Troubleshooting] Failed Internet access through router
[Troubleshooting] WiFi signal is often disconnected
Windows 10
Table of Contents:
1. Make sure the wireless function is activated
2. Confirm and connect to wireless network
3. Execute the Windows Network Troubleshooter
4. Restore BIOS settings
5. Update Wireless driver
6. Restore network settings to default values
7. Wireless network adapter with Yellow Exclamation in Device Manager
8. Update BIOS
1. Confirm whether WI-FI function is disable
If you click the network connection icon, the Wi Fi and action hotspot icons are not displayed,
please confirm whether the Wi Fi option in the device administrator or in the BIOS is turned off, refer to Q2 & A2
2. Confirm and connect to WI-FI
(for example: TUF GAMING B550-PLUS WI-FI)
a. Click the network icon and select the root, for example, ASUS_Router
b. Click [Connect] item
c. Enter the network security key and click [Next]
d. It show as below[Connected, secured]
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
3. Execute the Windows Network Troubleshooter
Click [Start]-[Settings], then click [Update & Security]
Click [Troubleshoot]-[Additional troubleshooters].
Find [Network Adapter] and click [Run the troubleshooter].
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
4. Restore BIOS settings
Try to reset BIOS to default settings, here you can learn more about How to restore BIOS settings.
If the problem persists, please continue the next troubleshooting step.
Back to Table of Contents
5. Update Wireless driver
Update the Wireless and Bluetooth drivers through Device Manager：
If the versions are too different between the Wireless and Bluetooth drivers, it may cause a software compatible issue. So, we recommend updating both drivers to the latest version.
a. Right-click on [Start] 1 and click [Device Manager] 2.
b. Click the arrow 3 next to the [Network adapters] device type. Right-click [MediaTek Wi-Fi 6 MT7921 Wireless LAN Card]4 and click [Uninstall Device]5.
Note: The name of the wireless network device may be different on different motherboard models.
c. Check [Attempt to remove the driver for this device] 6 and click [Uninstall] 7.
d. Click the arrow 8 next to the [Bluetooth] device type. Right-click [MediaTek Bluetooth Adapter] 9 and click [Uninstall Device]10.
Note: The name of the Bluetooth device may be different on motherboards with different models.
e. Check [Attempt to remove the driver for this device]11 and click [Uninstall]12.
f. After uninstalling the network adapters and Bluetooth in Device Manager, click [Action] 13 and then select [Scan for hardware changes] 14.
The computer will reinstall the wireless network and Bluetooth drivers and show up again in the Network Adapters and Bluetooth Device categories.
g. If the wireless network and Bluetooth driver cannot be automatically updated through the device manager, please go to the ASUS official website to download the driver and install it. Please refer to FAQ:[Motherboard] How to install motherboard drivers and utilities
Note: Please find the manufacturer driver corresponding to your motherboard's wireless network card and Bluetooth device. This example manufacturer is [Intel].
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
6. Load default of the network setting
a. Click Windows start icon and then click [Settings]
b. Click [Network & Internet] and then click [Network reset]
c. Click [Reset now] and Confirm [Yes]
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
7. An exclamation mark appears on the wireless network interface card in the device manager
If you find a yellow exclamation mark appears on the wireless network interface card in the device administrator, as shown in the following figure:
Please try the following steps to fix
a. Turn off the computer power, unplug the power cord, and perform CMOS reset steps, refer to FAQ: How to clear CMOS
b. After reconnecting the power supply and turning on the computer, please confirm whether the wireless network interface card in the device manager is back to normal.
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
8. Update BIOS
If you still have problems with the wireless network connection after troubleshooting the above steps, please update the motherboard BIOS to the latest version. Refer to FAQ: [Motherboard] How to update BIOS of the motherboard ?(Include different generation CPU)
If the issue persists, continue with the troubleshooting steps below.
Back to Table of Contents
If you have completed the above troubleshooting steps but the problem is still not resolved, it may be caused by the network service provider or network equipment (including modems, network cables, and wireless sharers). It is recommended that you contact your network provider or troubleshoot your network equipment. Learn more about ASUS router troubleshooting:
[Troubleshooting] Failed Internet access through router
[Troubleshooting] WiFi signal is often disconnected
Q&A
Q1: how to fix Wi-Fi signal is weak?
A1：
a. please confirm whether connect Wi-Fi Antenna, as below picture
b. If the signal is still weak, please check the root WI-FI signal. Refer to FAQ: How to improve reception of wireless signals(reduce wireless interference)
Q2: How to check whether WI-FI adapter is disable or not in Device Manger?
A2:
Click Windows 10 Start icon and select [Device Manager]
b. Confirm WI-FI network adapter is disable or not ,below is disable state
c. Select [Enable device] as below picture
How to check whether WI-FI adapter is disable or not in BIOS setup?
(for example：TUF GAMING B550-PLUS WI-FI)
a. press <DEL>key to enter BIOS [EZ Mode]
b. press <F7>key to enter BIOS[Advanced Mode]
c. select [Advanced]and [Onboard Devices Configuration] item
d. [Wi-Fi] Controller is [Disabled] as below picture
e. set [Wi-Fi Controller] to [Enabled]
f. Press<F10>key and then click<OK>
