The Reason Why Laptop Wi-Fi Stop Working When Switch On PC 

Your laptop and PC may be sharing the same Wi-Fi network, causing interference when both devices are active at the same time. This can cause your laptop’s Wi-Fi to stop working when you turn on your PC. To fix this issue, you can try changing the Wi-Fi channel on your router or upgrading to a dual-band router. Additionally, updating the network adapter drivers on both your laptop and PC may help resolve any compatibility issues.

When multiple devices are connected to the same Wi-Fi network, they share the same frequency and bandwidth.

This can cause interference, especially if one device is using more bandwidth than the others.

If your laptop and PC are on the same Wi-Fi network, they may be competing for the same resources, causing your laptop’s Wi-Fi to stop working when you turn on your PC.

Solutions

One solution to this issue is to change the Wi-Fi channel on your router. By default, most routers use channel 6, which can cause interference with other networks in the area.

Changing the channel to a less crowded one can help reduce interference and improve your Wi-Fi performance.

You can access your router’s settings by typing the router’s IP address into your web browser.

Another solution is to upgrade to a dual-band router. Dual-band routers support both the 2.4GHz and 5GHz frequency bands, which can help reduce interference and provide faster Wi-Fi speeds.

If you have a lot of devices on your network or need to stream high-definition video, upgrading to a dual-band router may be a good option.

Updating the network adapter drivers on both your laptop and PC may help resolve any compatibility issues.

Outdated drivers can cause connectivity issues and may not be optimized for your specific hardware and software. Updating your drivers can help ensure that your devices are running smoothly and can help prevent Wi-Fi connectivity issues.

To change the Wi-Fi channel on your router, you will need to access your router’s settings. The exact steps may vary depending on your router model, but the general steps are as follows:

1. Open your web browser and type in your router’s IP address. This information should be listed in your router’s documentation or on a sticker on the router itself.
2. Enter your router’s username and password when prompted. If you haven’t changed these from the default, you can usually find them in the router’s documentation.
3. Look for the wireless settings section of your router’s configuration page. This may be labeled “Wireless,” “Wi-Fi,” or something similar.
4. Look for the channel settings. This may be labeled “Channel,” “Wireless Channel,” or something similar.
5. Change the channel to a less crowded one. You can use a Wi-Fi analyzer app on your smartphone to see which channels are being used by other networks in your area.
6. Save your changes and reboot your router.

To upgrade to a dual-band router, you will need to purchase a new router that supports both the 2.4GHz and 5GHz frequency bands.

Many newer routers come with this feature, so be sure to check the specifications before purchasing.

Once you have your new router, follow the instructions included with the device to set it up and connect it to your network.

Make sure to update your network name and password to match your previous network settings so that your devices can reconnect to the new router seamlessly.

Updating the network adapter drivers on your laptop and PC can help resolve any compatibility issues that may be causing your Wi-Fi to stop working. Here’s how to do it:

1. First, identify the make and model of your network adapter. You can do this by opening Device Manager on Windows (press Windows key + X, then select Device Manager) or System Information on a Mac (click the Apple menu, then select About This Mac, then click System Report).
2. Once you have identified your network adapter, visit the manufacturer’s website to download the latest driver software. Make sure to download the correct driver for your specific model of network adapter and your operating system.
3. Install the new driver software on your laptop and PC. Follow the instructions provided by the manufacturer to complete the installation process.
4. Restart your devices to ensure the new drivers are fully installed and activated.

By updating your network adapter drivers, you ensure that your devices are running the latest software and are fully compatible with your Wi-Fi network.

This can help improve connectivity and reduce the risk of interference or other connectivity issues.