Router WiFi without network connection may be caused by various reasons. The following are some common reasons and solutions: Common reasons
1. Network configuration issue:- IP address conflict: When multiple devices use the same IP address, it may cause WiFi to be unable to access the internet- DNS server failure: The DNS server is unable to correctly resolve the URL, resulting in an inability to access the internet.
2. Router problem: - Router failure: Router hardware or software failure may cause the inability to connect to the Internet- Router configuration errors: such as WAN port not connected, incorrect broadband account or password, incorrect internet access settings, etc- Router overheating or prolonged operation: may lead to performance degradation and network disconnection.
3. Line connection issue: The connection between the network cable and the router or optical modem is not secure or damaged.
4. Device issue: Wireless network card driver issue: Expired or damaged drivers may cause inability to connect to WiFi- The wireless function of the device is not turned on or set incorrectly.
5. Security software interference: Firewalls or antivirus software may block network connections.
6. Internet Service Provider (ISP) Issue: Network interruption or maintenance may result in inability to access the internet. resolvent
1. Check network settings: - Ensure that the IP addresses between the device and the router do not conflict- Try changing the DNS server address, such as Google's DNS servers (8, 8, 8, 8 and 8, 8, 4, 4).
2. Check router: - Restart router: Turn off the router for a period of time and then restart it- Check router settings: Log in to the router management interface and check if the WAN port connection, broadband account and password, internet access method, and other settings are correct- Update router firmware: Visit the router's official website to download and install the latest firmware.
3. Check the wiring connection: - Ensure that the connection between the Ethernet cable and the router, as well as the optical modem, is secure and undamaged- Check if the network cable plug is securely plugged in. If it is loose, please unplug and plug it again.
4. Check the device: - Ensure that the wireless network card driver is up-to-date, if not, please update it- Check if the wireless function of the device is enabled and confirm that the settings are correct.
5. Turn off security software: - Temporarily turn off the firewall or antivirus software to see if it can solve the problem.
6. Contact ISP: - If none of the above methods can solve the problem, it may be an issue with the ISP. Please contact ISP customer service to inquire about network status and seek assistance.
7. Other suggestions: - Place the router in a well ventilated location to avoid overheating- Regularly inspect and clean the router and surrounding environment of dust and debris.
By following the above steps, you should be able to diagnose and solve the problem of router WiFi having no network connection. If the problem persists, it may be necessary to contact professional technicians for further inspection and repair.