Dear Alexander Lacy!
Welcome to the Microsoft Community!
Thank you for providing a detailed description of the problem and the solutions you have tried. You have tried many common solutions. The current Wi-Fi situation you are facing is indeed a tricky problem. But based on the information you provided; I have some additional suggestions for further inspection:
1. Try connecting to other Wi-Fi networks:
Find a Wi-Fi network in a public place such as a friend's house or a nearby coffee shop. Try to connect to these networks to see if your computer can successfully connect and access the Internet, because I need to explain here that the mobile hotspot channel and the WiFi channel are not exactly the same. If you can, this indicates that the problem may be with your home network settings. If you still can't connect, it may be a problem with your computer's network settings or hardware.
2. Check the router DHCP settings:
Open a web browser and enter the router's IP address (usually 192.168.0.1 or 192.168.1.1). Log in to the router's management interface (you may need a username and password, which are usually marked on the bottom of the router). Find the "DHCP" or "LAN Settings" option and make sure the DHCP server is enabled. At the same time, check whether the DHCP address pool has enough IP addresses to allocate. If DHCP is disabled, enable it and save the settings, then restart the router.
3. Configure a static IP address:
Open "Network and Sharing Center" > click your Wi-Fi connection > Properties > double-click "Internet Protocol Version 4 (TCP/IPv4)" > select "Use the following IP address". Then enter:
- IP address: 192.168.1.X (X can be any number between 2-254, make sure it does not conflict with other devices)
- Subnet mask: 255.255.255.0
- Default gateway: The IP address of your router (usually 192.168.1.1)
For DNS server, you can use public DNS: 8.8.8.8 and 8.8.4.4, as well as "4.2.2.1" and "4.2.2.2"
4. Ping test the router gateway:
Open the command prompt (run as administrator) and enter the following command:
ping 192.168.1.1 -t
(If your router IP is not 192.168.1.1, please adjust accordingly)
Observe whether there is a reply and the delay time. If ping fails, it may be a router problem or network configuration error.
5. Check the router channel:
Log in to the router management interface and find the wireless settings. Look for the "Channel" or "Channel" option. 2.4GHz networks generally work best using channels 1, 6, or 11 because these channels don't overlap. 5GHz networks have more channels available. Try changing the channel, especially if you live in a Wi-Fi-dense area like an apartment. Save your settings and reconnect.
6. Check your router logs:
In the router management interface, find the "System Log" or "Log" option. Review recent log entries, paying special attention to any errors or warnings related to your device's MAC address. This may reveal the cause of the connection problem, such as IP conflicts or authentication failures.
7. Temporarily turn off firewalls and antivirus software:
For Windows Firewall: Control Panel > System and Security > Windows Defender Firewall > Turn Windows Defender Firewall on or off.
For antivirus software, open the software's main interface and look for an option to temporarily disable or turn off real-time protection.
Note: Remember to re-enable these security features after testing.
8. Check the network adapter settings:
Right-click the Start menu > Network Connections > Change adapter options > Right-click the WiFi connection > Properties > Double-click "Internet Protocol Version 4 (TCP/IPv4)" and "Internet Protocol Version 6 (TCP/IPv6)" and make sure both are set to "Obtain an IP address automatically" and "Obtain DNS server address automatically".
9. Check the router firmware:
Log in to the router management interface and find the "System Update" or "Firmware" option. Check if there is an update available. If so, download and install the latest firmware. Note: Make sure the router has a stable power supply when updating the firmware. Interruptions may damage the router.
These detailed steps should help you troubleshoot the problem more deeply. If you encounter any difficulties or have any questions while following these steps, please feel free to let me know and I will be happy to provide further guidance.
Thank you for your understanding and support!
May everything be perfect for you at the end of 2024 and all the best in the coming 2025~
Best regards,
Yang.Z - MSFT | Microsoft Community Support Specialist