Wi-Fi Not Working? Here’s How You Can Fix Wi-Fi Problems

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Wi-Fi connectivity is a major part of our daily lives. We work from home, stream entertainment, and stay connected with our family and friends – it’s nearly impossible to get by without a Wi-Fi connection.

So when problems occur, like slow speeds, intermittent connections, or a complete loss of connectivity, it can be very disruptive. Let’s explore how to identify and fix common Wi-Fi issues.

Key Takeaways

  • Wi-Fi problems can stem from signal interference, improper router placement, an overloaded network, outdated hardware or firmware, and ISP issues.
  • Start by checking your devices, restarting your router, inspecting physical connections, reducing device load, checking for interferences, testing different frequencies, updating firmware, and possibly resetting the router to factory settings.
  • Use Wi-Fi analyzer apps, network scanner tools, and built-in router software to diagnose and address connectivity problems more effectively.
  • Boost your Wi-Fi’s reach by optimizing router placement, upgrading your antenna, using extenders or mesh systems, and selecting less congested channels.

Why is My Wi-Fi Not Working?

Wi-Fi issues can stem from a variety of sources, which often makes it quite frustrating to pinpoint the exact cause.

Here are some of the most common reasons:

Signal InterferenceRouter PlacementOverloaded NetworkOutdated Hardware or FirmwareISP Issues

Other electronic devices in your home, such as microwaves and cordless phones, can interfere with your Wi-Fi signal. Additionally, neighboring Wi-Fi networks may also disrupt your connection, particularly in densely populated areas.

The location of your Wi-Fi router majorly affects coverage. Things like walls, floors, and furniture can block or weaken the signal.

Too many devices connected to your Wi-Fi at the same time can overload the network, slowing down the Internet speed for everyone connected.

An old router or outdated firmware can lead to performance issues and frequent disconnections.

Sometimes, the problem may not be with your setup but with your Internet Service Provider (ISP). Temporary service outages or maintenance work can interrupt your Wi-Fi without notice.

Basic Wi-Fi Troubleshooting Checklist

When you encounter Wi-Fi issues, a systematic approach can help restore your connection. Here’s a simple step-by-step guide to basic Wi-Fi troubleshooting:

Basic Wi-Fi Troubleshooting Checklist

  1. Check Your Devices

    Make sure that the issue isn’t isolated to a single device. Try connecting with another device to see if the problem persists.
  2. Restart Your Router

    Sometimes, simply restarting your router can resolve connectivity issues. Unplug it, wait for about a minute, and plug it back in.
  3. Inspect Physical Connections

    Check all wired connections to your router and modem. Make sure that all cables are securely plugged in and undamaged.
  4. Limit Device Load

    Disconnect some devices from your network to see if the performance improves. This can help determine if the issue is due to network overload.
  5. Check for Interferences

    Move devices that may cause interference, like microwaves and baby monitors, away from your router. Also, consider changing your router’s channel through its settings to avoid interference from neighboring Wi-Fi.
  6. Test Different Frequencies

    If your router is dual-band, try switching between frequencies (2.4 GHz and 5 GHz) to see which offers a better connection.
  7. Update Firmware

    Make sure your router’s firmware is up to date. Manufacturers often release updates to improve performance and security.
  8. Reset to Factory Settings

    If all else fails, consider resetting your router to its factory settings. Remember, this will erase all your settings, so you’ll need to set up your network again.

Tools for Wi-Fi Troubleshooting

Effectively diagnosing Wi-Fi issues sometimes requires you to use specific tools that can help pinpoint the source of the problem.

Here are some great software and hardware tools that can help in troubleshooting your Wi-Fi:

Wi-Fi Analyzer Apps
These apps, available for both smartphones and computers, allow you to view the Wi-Fi networks in your area. They can help identify channel overlaps and signal strength. Popular options include NetSpot and Wi-Fi Analyzer.

Network Scanner Tools
Tools like Advanced IP Scanner or Fing help you see all the devices connected to your network. This can be useful for identifying unauthorized devices or checking how many devices are currently using your network.

Speed Test Websites and Apps
Using speed test services like Speedtest by Ookla or Fast.com allows you to check the current download and upload speeds of your connection. This can confirm whether your Internet speed is as expected or if there’s a significant drop.
Ethernet Cables
Using a good quality Ethernet cable to connect directly from your device to the router can help you determine if the issue is with the Wi-Fi signal or your Internet connection as a whole.
Router’s Built-in Software
Most modern routers come with their own software dashboard that can be accessed via a web browser. These dashboards often have tools to check the health of your network, update firmware, and adjust settings like channels and frequencies.
Signal Extenders or Mesh Systems
If your issue is related to the range of your Wi-Fi, considering a signal extender or investing in a mesh network system can help expand your coverage area.

Understanding Your Router’s Icons

Routers are equipped with various icons on their interfaces or LED panels. Each icon represents a different function or status.

Here’s a list of some of the standard icons found on most routers:

  • Power Icon: Typically represented by a circle with a line at the top, this icon lights up when the router is turned on and receiving power.
  • Internet Icon: This globe or wide area network (WAN) icon illuminates when your router is successfully connected to the Internet. If it blinks, the router is trying to establish a connection.
  • Wi-Fi Icon: Represented by waves or a dot with radiating lines, this icon shows the status of the wireless signal. A steady light means the Wi-Fi is active; blinking usually means data transmission.
  • Ethernet Icon: This icon, resembling several linked squares, lights up or blinks when a device is connected via an Ethernet cable, indicating that data is being transferred over that connection.
  • USB Icon: If your router supports USB connections, this icon appears when a USB device is connected and properly recognized.
  • Signal Strength Indicator: Some routers display signal bars to show the strength of the Wi-Fi signal, similar to what you see on a mobile phone.

What Do the Colors of Your Router’s Lights Mean?

The colors and patterns of the lights on your router provide information about the status of your network.

Here’s how to interpret common light colors and what they typically mean:

Green or White LightBlue LightAmber or Orange LightRed LightBlinking Lights

This is generally a good sign. A steady green or white light usually means that everything is functioning correctly.

Often indicates a good connection as well. On some routers, blue light can mean enhanced features like Wi-Fi Protected Setup (WPS) is active.

This color might indicate a range of things depending on the context. Generally, it suggests a connection is established but may not be functioning optimally. For example, it could mean the Internet is connected but at a slower speed than usual.

A red light is typically a warning signal. It could mean that there is no Internet connection, the router has overheated, or there is a serious malfunction within the router.

Flashing or blinking lights can indicate activity. For instance, a blinking green or blue light often means data is being transmitted. However, a blinking red light could indicate a problem that needs immediate attention, such as a failed firmware update or a hardware issue.

How to Fix Wi-Fi Problems

Looking for how to fix those Wi-Fi problems? Here are some of the common solutions:

Problem Solution Description
Slow Internet Speeds Reduce Load Disconnect devices that are not in use to free up bandwidth.
Change Frequency If your router supports dual-band connectivity, switch from 2.4 GHz to 5 GHz, as 5 GHz is typically faster and less congested.
Optimize Placement Move your router to a central location away from walls and obstructions to improve signal strength.
Intermittent Connectivity Restart Router Often, simply restarting your router can resolve intermittent issues by refreshing your network.
Check for Interference Remove or reposition other electronic devices that could interfere with your Wi-Fi signal.
Update Firmware Make sure your router’s firmware is up to date to fix bugs that might be causing instability.
No Internet Connection Check Modem Make sure your modem is functioning properly and displaying normal status lights.
Cable Connections Verify all wired connections are secure and intact. Replace any damaged cables.
Contact ISP If the above steps don’t resolve the issue, there may be a service outage or account problem that your ISP needs to address.
Wi-Fi Network Not Showing Up SSID Broadcast Make sure your router is set to broadcast the SSID (network name). You can check and change this setting in your router’s settings.
Restart Devices Sometimes, simply restarting both your router and the device trying to connect can resolve visibility issues.
Wi-Fi Connects, but No Internet Check IP Address Make sure your device is obtaining an IP address automatically from the router.
DNS Settings Check if the DNS settings on your router are correct, or try changing to a public DNS like Google DNS ( and

Flushing DNS Cache

Flushing the DNS cache on your devices can resolve connectivity issues related to outdated or corrupted DNS records.

Here are the steps to flush the DNS cache for various operating systems.

Operating System How to Flush DNS Cache
  1. Open Command Prompt as admin.
  2. Type ipconfig /flushdns and press Enter.
  1. Open Terminal.
  2. Type sudo killall -HUP mDNSResponder and press Enter.
  3. Enter password if prompted.
iOS You can’t, exactly. But there’s a workaround. You can either:

  1. Use Airplane Mode.
  2. Reboot your iOS device.
  3. Reset your network settings.
  1. Go to Settings and search for Connections.
  2. Tap Connection & Sharing > Private DNS.
  3. Select Private DNS provider hostname, clear the domain, and tap Save.

Why is Your Wi-Fi Connected But There’s No Internet Connection?

Why did my Wi-Fi suddenly stop working? It says it’s connected, but there’s no Internet connection!

When your device shows it’s connected to Wi-Fi but there’s no Internet access, several issues could be at play. A common cause is a disruption from your ISP. Checking for service outages via their website or customer service can clarify this.

Also, router glitches or misconfigurations can block Internet transmission, which is often resolved by restarting both your router and modem.

Incorrect DNS settings can also disrupt Internet access by failing to correctly map domain names to IP addresses. Switching to a reliable public DNS service like Google DNS or Cloudflare might resolve this issue. IP address conflicts within your network can cause similar problems. Restarting your device usually prompts it to get a new, conflict-free IP address.

Another technical hiccup involves expired dynamic host configuration protocol (DHCP) leases, where your device fails to communicate effectively with your network router. Reconnecting to your network or manually renewing the DHCP lease in your device settings can fix this.

Finally, overzealous firewalls or security software might inadvertently block Internet access. Temporarily disabling these programs can determine if they’re the cause, allowing you to adjust the settings to restore access.

How to Boost Your Wi-Fi Reach

Your Wi-Fi may be working fine, but you just need to extend the reach a bit.

Here are some tips to help improve the range and strength of your Wi-Fi signal.

How to Boost Your Wi-Fi Reach

Optimal Router Placement
Keep the router central, away from walls and metals, ideally on a high shelf.

Upgrade Your Antenna
Consider replacing your router’s existing antenna with a high-gain one for better range.

Use Wi-Fi Extenders
Extend coverage using Wi-Fi extenders that retransmit the router’s signal further.
Add Access Points
Install additional Wi-Fi access points in large homes or offices to improve coverage.
Switch to a Mesh Network
Implement a mesh network system to eliminate dead zones and improve signal consistency.
Select the Right Channel
Use a Wi-Fi analyzer to find and switch to a less congested channel.
Keep Your Firmware Updated
Regularly update your router’s firmware to improve performance and security.

The Bottom Line

We’ve explored practical solutions for common Wi-Fi issues, from basic troubleshooting like restarting routers and checking connections to improving network reach through optimal placement and tech upgrades like Wi-Fi extenders and mesh systems.

Using these tips, you should be able to fix the most common Wi-Fi problems, but if you’re still having issues, contact your ISP.


Why is my Wi-Fi suddenly not working?

Why is my Wi-Fi connected but not working?

How do I restore my Wi-Fi connection?

How do I fix Wi-Fi not working?

Why Does My Computer Keep Disconnecting From Wi-Fi?

What should I do if my Wi-Fi is working but my Internet is slow?

How do I fix no Wi-Fi connection?

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Marshall Gunnell
IT & Cybersecurity Expert
Marshall Gunnell
IT & Cybersecurity Expert

Marshall, a Mississippi native, is a dedicated expert in IT and cybersecurity with over a decade of experience. Along Techopedia, his bylines can be found on Business Insider, PCWorld, VGKAMI, How-To Geek, and Zapier. His articles have reached a massive readership of over 100 million people. Marshall previously served as the Chief Marketing Officer (CMO) and technical staff writer at StorageReview, providing comprehensive news coverage and detailed product reviews on storage arrays, hard drives, SSDs, and more. He also developed sales strategies based on regional and global market research to identify and create new project initiatives.  Currently, Marshall resides in…