You can try to dodge interference by changing your router to another channel. You can blindly choose a channel (going with 1 or 11 is probably your best bet) or you can make a better-educated selection by checking to see which channels nearby networks are using so you can use a different channel. You can check with a free program like InSSIDer or Vistumbler, or use the Web-based Meraki WiFi Stumbler. If you don't have access to one of these applications on your laptop, you can use a free app like Wifi Analyzer (on Android devices) or Wi-Fi Finder (on Apple iOS devices) on your smartphone or tablet to scan for Wi-Fi networks.
Once you've decided on a channel to switch to, you'll need to log in to your router's control panel and change the channel. To access the router's Web-based control panel, open a new window in your browser while you're connected to your router's wireless network and then type in its IP address (most commonly 192.168.1.1 or 192.168.0.1).
If you don't know your router's IP address, refer to the wireless connection details: In the lower-right corner of your Windows desktop, right-click the network icon and open the Network and Sharing Center. Select the wireless network that you wish to view, and click the Details button. You should now see the router's IP address listed as the Default Gateway.
Next, log in to your router control panel with the appropriate username and password. If you don't know the password, you may never have changed it--so try the default password, which you can look up on RouterPasswords.com. If your Internet service provider supplied your router, you may have to call your ISP for help in accessing the password.
After logging in to the router, find the wireless settings and change the channel. Many routers have an automatic channel selection feature; if yours does, you can disable it and manually choose a channel. Again, for maximum performance, try to stick with channel 1 or 11. Once you've saved and applied the settings, your router may reboot; if so, reconnect and then check to see whether your connectivity problem persists. If so, you may need to try another channel.
Check and Reposition the Wireless Router