Issue of “no Internet access” on my windows and my phone, tries everything could to fix it, can anyone help

Troubleshooting No Internet Access on Windows and Mobile Devices: A Comprehensive Guide

Experiencing a loss of internet connectivity can be frustrating, especially when multiple devices such as a Windows PC and a smartphone are affected. The issue of “no Internet access” can stem from a variety of causes, ranging from hardware problems to network configuration glitches. In this guide, we’ll explore effective troubleshooting steps to diagnose and resolve the problem, using a TP-Link TP-WR740N router as an example.

Identifying the Common Cause

The primary concern is that both your Windows computer and mobile device are unable to access the internet despite being connected to the router. This suggests that the issue may lie within the network infrastructure or device configuration rather than individual device faults.

Initial Hardware Checks

• Inspect Physical Connections:
  Ensure all Ethernet cables or wireless connections are secure. Confirm that indicator lights on the router and modem are green, signifying active connections.

• Power Cycle Equipment:
  Turn off both the router and modem. Wait at least 10 minutes before turning them back on. This refreshes the network hardware and can resolve temporary glitches.

Software and Network Reset Procedures

1. Network Reset on Windows:
   Use Windows’ built-in network reset feature to restore network settings to default.

2. Command Line Tools:
   Running specific commands with administrator privileges can help reset and renew network configurations:

3. ipconfig /release — releases the current IP address

4. ipconfig /renew — requests a new IP address from the DHCP server
5. ipconfig /flushdns — clears DNS cache to resolve URL resolution issues

Execute these commands carefully in the Command Prompt with administrator rights.

1. Reset TCP/IP Stack and Winsock Catalogs:

2. netsh winsock reset

3. netsh int ip reset

These commands reset underlying network components, which can fix corruption or misconfiguration issues.

Understanding IP Address Assignments

A common diagnostic step involves checking your PC’s assigned IP address:

• If your device displays an IP address starting with 169.254.x.x, it indicates it failed to obtain a proper IP address from the DHCP server, often pointing to network configuration or DHCP issues.

Additional Troubleshooting Tips

• Verify Router Settings:
  Log into your router’s admin panel and check if it’s correctly configured and connected to the internet