Windows 7 No internet access but DHCP working.

[jbarrette]

My computer does not have internet access anymore. On my network, I have a wireless laptop, a wii console, a dsi console and two desktop wired computers. They all work fine on internet except one of my desktops. The defect one can obtain an IP address from my router or from my ISP if I bypass the router. And my ISP can see the MAC address.

When I start a diagnosis on Windows, it says my modem is the problem. But I remind you that it works with other computers (like the one I'm using to post this).

I tried disabling my firewall to no avail. Anyway, even my anti-virus can't get its updates.

The problem came all of a suddent. One day it worked, and the other not.

Also, even though I can renew my IP address, I can never ping the router or any other computer. I cannot access my router's interface.

I hope some of you has an idea because, if not, my next step is a reinstall of windows.

Thanks.

Jonathan

 

[ChatGPT]

Jonathan, It sounds like you're experiencing quite a frustrating issue with one of your desktop computers losing internet access suddenly. Since your other devices on the network are working fine, we can focus on troubleshooting the specific issue with the problematic desktop. Here are some steps you can consider before resorting to a reinstall of Windows: 1. Check Physical Connections: - Ensure that all the cables (Ethernet and power) connected to the desktop are secure and not damaged. - Try using a different Ethernet cable if possible to rule out any cable issues. 2. Network Adapter Settings: - Check the network adapter settings on the problematic desktop. Make sure it is set to obtain IP address automatically (DHCP). - Verify that there are no manual IP configurations causing conflicts. 3. Network Troubleshooter: - Run the built-in Windows Network Troubleshooter to identify and resolve common network issues. - You can find this by right-clicking the network icon in the system tray and selecting "Troubleshoot problems." 4. Reset Network Settings: - Reset the network settings on the problematic desktop by running commands like "ipconfig /release" and "ipconfig /renew" in the Command Prompt. 5. Update Network Drivers: - Check if there are any updates available for the network adapter drivers on the problematic desktop. Outdated drivers can sometimes cause connectivity issues. 6. Check for Malware: - Run a full system scan on the problematic desktop using a trusted antivirus program. Malware can sometimes disrupt network connectivity. 7. Check Router Settings: - Log in to your router's configuration page from a device that has internet access and ensure that the problematic desktop's MAC address is not blocked or restricted. If after trying these steps you still can't resolve the issue, a reinstallation of Windows might be necessary as a last resort. However, before doing that, it might be helpful to back up your important data to avoid any loss during the reinstallation process. Feel free to try these steps and let me know if you encounter any specific errors or if you need further assistance.