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How to Fix Wi-Fi and Internet Connection Problems

Last updated November 6, 2026 · By the PC Guide Info editorial team

Connection problems can be caused by your computer, the router or your internet provider. Find out which by working methodically.

1. Check other devices

If your phone also cannot get online, the problem is probably the router or your provider. If only one computer is affected, focus on that computer.

2. Restart

Turn off the router and modem, wait 30 seconds, and turn them on again. Then restart your computer.

3. Check the basics on your computer

  • Make sure airplane mode is off and Wi-Fi is turned on.
  • Disconnect and reconnect to the network, re-entering the password.

4. Run the Windows network troubleshooter

Open Settings, then Network and internet, then Advanced network settings, then Network reset or Network troubleshooter, depending on your Windows version.

5. Improve your signal

  • Move closer to the router or remove obstacles such as walls and metal objects.
  • Keep the router in a central, raised position.
  • Try the 5 GHz band for speed at shorter range and 2.4 GHz for longer range.
  • Change the Wi-Fi channel if neighbours' networks cause interference.

6. Update drivers and firmware

Update the Wi-Fi adapter driver from your computer manufacturer's website, and check for router firmware updates.

7. Try a wired connection

Connect an Ethernet cable to confirm whether the problem is Wi-Fi specific. Wired connections are usually faster and more stable.

8. Check for DNS issues

If sites will not load but the connection shows as active, try switching to a public DNS service in your network adapter settings, or run ipconfig /flushdns in Command Prompt.

9. Contact your provider

If the problem affects all devices, even on a cable, check your provider's service status page or contact them.

This article is for general information only and is not professional advice. Features, prices and menu names may change between software versions. See our disclaimer.