The sudden failure of the computer to display WiFi may be caused by various reasons. Here are some common reasons and corresponding solutions: Common reasons
1. Wireless network adapter disabled: - In Device Manager, the wireless network adapter may be manually disabled, resulting in the inability to display WiFi.
2. Driver issue: The driver for the wireless network adapter may be damaged, outdated, or incompatible, causing it to malfunction.
3. Airplane mode enabled: When the airplane mode of the computer is enabled, all wireless communication functions, including WiFi, will be turned off.
4. System settings issue: - Some system settings may have been modified, causing WiFi options to be invisible or unusable.
5. Router issues: Router failures, improper settings, or restarting may also cause the computer to be unable to search for WiFi signals.
6. Physical obstacles or too far distance: There are too many physical obstacles (such as walls) or too far distance between the computer and the router, which affects signal reception. resolvent
1. Check and enable wireless network adapter: - Open Device Manager (right-click on the "Start" button, select "Device Manager"), find the wireless network adapter in the network adapter, if it is disabled, right-click and select "Enable Device".
2. Update or reinstall drivers: - In Device Manager, right-click on the wireless network adapter, select "Update Drivers", and then follow the prompts. If the update fails, you can try uninstalling the driver and restarting the computer to have Windows automatically reinstall- Professional driver management software (such as "Driver Life") can also be used to detect and update driver programs.
3. Turn off airplane mode: - Check if the computer's airplane mode is turned off. Usually, airplane mode can be turned off through shortcut keys (such as Fn+F5) or in system settings.
4. Check system settings: - Go to "Settings" ->"Network and Internet" ->"Wi Fi", make sure the Wi Fi option is "on".
5. Restart the router: - Try restarting the router, wait for a few minutes, and then check if the computer can detect WiFi signals.
6. Check router settings: - Ensure that the wireless function of the router is turned on, and check if the wireless channel and SSID broadcast are normal.
7. Run network troubleshooting tool:- The Windows system comes with a network diagnostic tool that can be run through "Control Panel" ->"Network and Internet" ->"Network and Sharing Center" ->"Troubleshooting" to diagnose network connections and follow the prompts.
8. Check for physical obstacles and distance: - Try to minimize physical obstacles between the computer and the router, or try moving the computer closer to the router.
If none of the above methods can solve the problem, it may be due to a hardware malfunction of the wireless network card. In this case, it is recommended to contact a professional repair service for inspection or replacement of the wireless network card. Regularly checking for system updates and driver updates is also an important measure to maintain stable device operation.