Why Is My Wi-Fi Not Working? — Complete Troubleshooting Guide

Last Updated: October 2026

Quick Fixes to Try First (60-Second Checklist)

Before diving into detailed troubleshooting, run through these quick fixes. They resolve the vast majority of Wi-Fi problems in under a minute:

1. Toggle Wi-Fi off and on on your device. This forces a fresh scan for available networks and a new connection.
2. Enable Airplane Mode for 10 seconds, then disable it. This resets all wireless radios on your device (Wi-Fi, Bluetooth, cellular) and often clears temporary glitches.
3. Restart your router. Unplug the power cable, wait 30 seconds, plug it back in, and wait 1–2 minutes for it to fully boot. If you have a separate modem, restart that first.
4. Move closer to the router. If you're far away or behind thick walls, weak signal strength may be the entire problem.
5. Check other devices. If your phone has Wi-Fi but your laptop doesn't (or vice versa), the problem is device-specific, not network-wide.
6. Check your ISP. If no devices have internet, visit your ISP's status page on your phone (using cellular data) or check downdetector.com for reported outages.

If none of these quick fixes work, continue with the detailed troubleshooting below based on your specific symptom.

Problem: No Wi-Fi Networks Found

If your device cannot see any Wi-Fi networks — not just yours, but none at all — the issue is almost certainly with your device's wireless adapter, not your router. Other devices nearby should still see networks normally.

Check That Wi-Fi Is Enabled

This sounds obvious, but Wi-Fi can be disabled in surprising ways:

• Physical switch: Some older laptops have a physical Wi-Fi toggle on the side. Make sure it's in the "on" position.
• Keyboard shortcut: Many laptops use Fn + F2, Fn + F3, or a similar key combination to toggle Wi-Fi. Look for a key with a wireless icon.
• Windows: Click the Wi-Fi icon in the taskbar and make sure Wi-Fi is toggled on. Also check Settings → Network & Internet → Wi-Fi.
• macOS: Click the Wi-Fi icon in the menu bar and ensure it says "Wi-Fi: On." If the icon is grayed out, click it and select "Turn Wi-Fi On."
• Airplane Mode: Make sure Airplane Mode is off — it disables all wireless connections.

Restart the Wi-Fi Adapter

On Windows, you can disable and re-enable the adapter without restarting:

1. Press Win + X and select Device Manager.
2. Expand Network adapters.
3. Right-click your Wi-Fi adapter (e.g., "Intel Wi-Fi 6 AX201") and select Disable device.
4. Wait 5 seconds, then right-click again and select Enable device.

On macOS, turn Wi-Fi off from the menu bar, wait 10 seconds, then turn it back on.

Update or Reinstall Wi-Fi Drivers (Windows)

Corrupted or outdated wireless drivers are one of the most common causes of "no networks found" on Windows:

1. Open Device Manager → Network adapters.
2. Right-click your Wi-Fi adapter and select Update driver → Search automatically for drivers.
3. If no update is found, visit your laptop manufacturer's website (Dell, HP, Lenovo, ASUS, etc.) and download the latest Wi-Fi driver for your model.
4. If updating doesn't help, try Uninstall device (check "Attempt to remove the driver"), then restart your computer. Windows will reinstall a fresh copy of the driver automatically.

Run the Windows Network Troubleshooter

Windows includes a built-in troubleshooter that can detect and fix common adapter issues:

1. Go to Settings → System → Troubleshoot → Other troubleshooters.
2. Click Run next to Network Adapter (or Internet Connections).
3. Follow the prompts. The troubleshooter can reset adapters, flush DNS, and repair configuration issues.

Problem: Connected to Wi-Fi But No Internet

You can see and connect to your Wi-Fi network, but websites don't load and you see a "No Internet" or "No Internet Access" warning. This is one of the most common Wi-Fi complaints. See our dedicated How to Fix Wi-Fi Connected But No Internet guide for an in-depth walkthrough. Here's a quick summary of the most effective fixes:

• Restart the router and modem. This resolves the issue more often than any other fix.
• Check if other devices have internet. If they do, the problem is with your device. If none do, the problem is the router or ISP.
• Release and renew your IP address. On Windows: ipconfig /release then ipconfig /renew. On Mac: System Settings → Network → Wi-Fi → Details → TCP/IP → Renew DHCP Lease.
• Flush DNS and switch DNS servers. Run ipconfig /flushdns (Windows) and change your DNS to 1.1.1.1 or 8.8.8.8.
• Check for a captive portal. Public Wi-Fi networks (hotels, airports) often require you to log in via a web page before granting internet access. Try opening http://neverssl.com in your browser to trigger the portal.
• Disable VPN or proxy. Active VPN connections or proxy settings can block internet traffic if the VPN server is unreachable.

Problem: Wi-Fi Is Slow

Your Wi-Fi connects and works, but everything feels sluggish — pages load slowly, videos buffer, and downloads crawl. See our Why Is My Internet Slow? guide for a comprehensive deep-dive. Here are the Wi-Fi-specific causes:

Distance and Obstacles

Wi-Fi signal strength degrades with distance and is absorbed by physical obstacles. Thick walls (especially concrete, brick, or plaster with metal lath), floors, large appliances, and mirrors all reduce signal quality. The 5 GHz band is particularly affected by obstacles — it offers faster speeds but significantly shorter range compared to 2.4 GHz.

• Move closer to the router or move the router to a more central location in your home.
• Elevate the router — placing it on a shelf or mounting it on a wall (not on the floor behind furniture) dramatically improves coverage.
• Consider a mesh system or Wi-Fi extender if your home is large or has challenging layouts. Mesh systems (like Google Nest WiFi, eero, or TP-Link Deco) provide seamless coverage by placing multiple access points throughout your home.

Wi-Fi Channel Congestion

In apartments and densely populated areas, dozens of Wi-Fi networks may be competing on the same channel. The 2.4 GHz band only has three non-overlapping channels (1, 6, and 11), making congestion very common. Use a Wi-Fi analyzer app (Wi-Fi Analyzer on Android, WiFi Explorer on Mac) to scan for the least congested channel, then change your router's channel in its admin panel under the wireless settings.

Too Many Devices

Every device connected to your Wi-Fi shares the available bandwidth. Smart TVs streaming 4K, game consoles downloading updates, security cameras uploading video, and smartphones syncing in the background all consume bandwidth even when you're not actively using them. Check your router's admin panel for a list of connected devices and disconnect or limit devices you're not using.

Band Selection: 2.4 GHz vs. 5 GHz

If your router broadcasts both 2.4 GHz and 5 GHz networks, make sure you're connected to the right one:

• 5 GHz: Faster speeds (up to 1,200+ Mbps on Wi-Fi 5, 2,400+ on Wi-Fi 6), less interference, but shorter range and weaker wall penetration. Best when you're in the same room or one room away from the router.
• 2.4 GHz: Slower speeds (up to 300–600 Mbps on Wi-Fi 5/6), more interference from other devices, but much better range and wall penetration. Best for IoT devices, devices far from the router, or areas with many walls.

Outdated Router Hardware

If your router is more than 5 years old, it may not support modern Wi-Fi standards. Wi-Fi 4 (802.11n) tops out at 300–600 Mbps theoretical, while Wi-Fi 5 (802.11ac) supports 1,300+ Mbps and Wi-Fi 6 (802.11ax) supports 2,400+ Mbps with much better performance in congested environments. Upgrading to a Wi-Fi 6 or Wi-Fi 6E router can dramatically improve speeds and reliability.

Problem: Wi-Fi Keeps Disconnecting

Intermittent disconnections are among the most frustrating Wi-Fi problems because they're hard to reproduce and diagnose. Here are the most common causes:

Wireless Interference

The 2.4 GHz Wi-Fi band shares spectrum with Bluetooth, baby monitors, cordless phones, wireless keyboards/mice, and — most notoriously — microwave ovens. If your Wi-Fi drops every time someone uses the microwave, interference is the culprit. Switch to the 5 GHz band or move the router away from interfering devices.

Power Management Settings

Windows and some other operating systems aggressively disable Wi-Fi adapters to save battery. To prevent this on Windows:

1. Open Device Manager → Network adapters.
2. Right-click your Wi-Fi adapter → Properties → Power Management tab.
3. Uncheck "Allow the computer to turn off this device to save power."
4. Click OK.

Also go to Settings → System → Power & battery → Power mode and set it to Best performance when on AC power.

Router Overheating

Routers that are enclosed in cabinets, stacked on top of other electronics, or placed in direct sunlight can overheat. Overheating causes performance degradation and intermittent disconnections as the hardware throttles or becomes unstable. Ensure your router has adequate ventilation — place it on an open shelf with at least a few inches of clearance on all sides.

Firmware Issues

Outdated router firmware can contain bugs that cause connection drops, especially under heavy load. Log into your router's admin panel and check for firmware updates. Most modern routers support automatic updates — enable this feature if available. After updating firmware, restart the router to apply the changes fully.

DHCP Lease Conflicts

If two devices on your network are assigned the same IP address (a DHCP conflict), both devices will experience intermittent connectivity issues. Check your router's DHCP client list for duplicate IP addresses. Restarting the router clears the DHCP lease table and usually resolves conflicts. You can also set a shorter DHCP lease time (e.g., 8 hours instead of 24) to reduce the chance of stale leases causing issues.

Device-Specific Wi-Fi Fixes

Windows 10 / Windows 11

• Network Reset: Settings → Network & Internet → Advanced network settings → Network reset. This reinstalls all network adapters and resets all settings to defaults. Your computer will restart.
• TCP/IP Reset: Open Command Prompt as Admin and run: netsh winsock reset, then netsh int ip reset, then ipconfig /flushdns, then restart.
• Forget and Reconnect: Settings → Network & Internet → Wi-Fi → Manage known networks. Find your network, click Forget, then reconnect and enter the password again.
• Driver Rollback: If Wi-Fi broke after a Windows Update, open Device Manager → Wi-Fi adapter → Properties → Driver tab → Roll Back Driver.

macOS

• Renew DHCP Lease: System Settings → Network → Wi-Fi → Details → TCP/IP → Renew DHCP Lease.
• Delete Wi-Fi preferences: Go to /Library/Preferences/SystemConfiguration/ and delete the files com.apple.airport.preferences.plist and NetworkInterfaces.plist. Restart your Mac. This forces macOS to rebuild its wireless configuration from scratch.
• Create a new Network Location: System Settings → Network → Location dropdown → Edit Locations → add a new location. Switch to it to get a clean network configuration.
• Reset SMC / NVRAM: On Intel Macs, resetting the SMC (System Management Controller) and NVRAM can fix persistent wireless issues. Apple Silicon Macs reset these automatically on restart.

iPhone / iPad

• Forget and Rejoin: Settings → Wi-Fi → tap the "ⓘ" next to your network → Forget This Network → reconnect.
• Reset Network Settings: Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings. This erases all saved Wi-Fi passwords, VPN configurations, and Bluetooth pairings.
• Disable Private Wi-Fi Address: Settings → Wi-Fi → "ⓘ" next to your network → toggle off Private Wi-Fi Address. Some routers have compatibility issues with randomized MAC addresses.
• Disable Wi-Fi Assist: Settings → Cellular → scroll down to Wi-Fi Assist and turn it off. This prevents iOS from silently switching to cellular when Wi-Fi is slow.

Android

• Forget and Rejoin: Settings → Network & Internet → Wi-Fi → long-press your network → Forget → reconnect.
• Reset Network Settings: Settings → System → Reset options → Reset Wi-Fi, mobile & Bluetooth.
• Disable Randomized MAC: Settings → Network & Internet → Wi-Fi → your network → Privacy → set to Use device MAC. Some older routers don't handle randomized MACs well.
• Switch to static IP: If DHCP isn't assigning an address correctly, tap your network → Advanced → IP settings → Static. Enter a manual IP (e.g., 192.168.1.100), gateway (192.168.1.1), and DNS (1.1.1.1).

Router-Level Troubleshooting

If multiple devices are experiencing Wi-Fi issues, the problem is likely with the router itself. Here's a systematic approach:

Check the Router's Status Lights

Router indicator lights tell you a lot about what's happening. While specific light patterns vary by brand, the general meanings are:

• Power light off: The router has no power. Check the power cable and outlet.
• Wi-Fi light off: The wireless radio is disabled. Press the Wi-Fi button on the router or enable it in the admin panel.
• Internet/WAN light off or red: The router cannot reach the internet. The problem is between the router and your ISP — check the modem and ISP status.
• All lights flashing rapidly: The router may be in a boot loop or updating firmware. Wait 5 minutes. If it persists, perform a factory reset.

Log Into the Router Admin Panel

Access your router's admin panel by opening a browser and navigating to 192.168.1.1, 192.168.0.1, or 10.0.0.1 (check the sticker on the router for the correct address and default login credentials). From here you can:

• Check the connection status — does the router have an IP address from the ISP?
• View connected devices — are unexpected devices hogging bandwidth?
• Change the Wi-Fi channel to avoid congestion.
• Update firmware to the latest version.
• Check DNS settings and switch to a public DNS like 1.1.1.1 or 8.8.8.8.
• Verify DHCP settings — the DHCP server should be enabled with an adequate address pool.

Check for ISP Outages

If your router shows no internet connection (WAN light off/red, no IP address from ISP), the problem is upstream:

• Check your ISP's status page or Twitter/X account for outage announcements.
• Visit downdetector.com from your phone (cellular data) to see real-time outage reports for your ISP.
• If you have a separate modem, check its lights. If the modem's internet light is off, the ISP connection is down.
• Call your ISP's support line — automated systems often announce known outages before connecting you to an agent.

Factory Reset (Last Resort)

If nothing else works and the router's configuration may be corrupted, a factory reset restores everything to default:

1. Locate the reset button on the back or bottom of the router (usually a tiny recessed button that requires a paperclip).
2. Press and hold for 10–15 seconds until the lights flash or the router reboots.
3. Wait 2–3 minutes for the router to fully restart with factory settings.
4. Connect to the default Wi-Fi network (name and password are on the router's sticker).
5. Log into the admin panel and reconfigure your Wi-Fi name, password, DNS settings, and any other custom configurations.

Warning: A factory reset erases all custom settings, including Wi-Fi passwords, port forwarding rules, parental controls, and static IP assignments. Only use this as a last resort.

Advanced Diagnostics

When basic troubleshooting doesn't resolve the issue, these diagnostic techniques help pinpoint the exact cause:

Ping Test

Open a terminal or Command Prompt and run the following sequence to isolate where connectivity breaks down:

1. ping 192.168.1.1 (your router's IP) — If this fails, your device can't reach the router. The problem is your local Wi-Fi connection.
2. ping 1.1.1.1 (Cloudflare's DNS) — If this fails but router ping works, the router can't reach the internet. The problem is between the router and ISP.
3. ping google.com — If this fails but pinging 1.1.1.1 works, DNS resolution is broken. Your internet works but DNS doesn't — change your DNS server.

Try our Ping & Traceroute tool for a visual network path analysis from our servers to any destination.

Wi-Fi Signal Strength Check

Check your Wi-Fi signal strength to determine if distance or obstacles are the problem:

• Windows: Run netsh wlan show interfaces in Command Prompt. Look at the "Signal" percentage. 80–100% is excellent, 50–80% is good, below 50% is poor.
• macOS: Hold Option and click the Wi-Fi icon in the menu bar. Check the "RSSI" value. −30 to −50 dBm is excellent, −50 to −70 dBm is good, below −70 dBm is weak.
• Android: Use a Wi-Fi analyzer app (e.g., WiFi Analyzer by farproc) for detailed signal strength and channel information.

Check for IP Address Conflicts

If your device receives a 169.254.x.x address (APIPA), it means DHCP failed and the device assigned itself a link-local address. This usually indicates the router's DHCP server isn't responding. Restart the router, or manually assign a static IP address in your device's network settings.

On Windows, run ipconfig to check your current IP address. On macOS, go to System Settings → Network → Wi-Fi → Details → TCP/IP. On Linux, run ip addr show.

Frequently Asked Questions

Why is my Wi-Fi not working even though the router is on?

A powered-on router doesn't guarantee working Wi-Fi. The Wi-Fi radio may be disabled (check for a physical toggle button), the firmware may have crashed (restart the router), the router may be overheating, or your ISP may be experiencing an outage. If the router's Wi-Fi LED is off, the wireless radio needs to be re-enabled via the admin panel or hardware button.

How do I fix "No Wi-Fi Networks Found" on my laptop?

If your laptop can't see any networks, the issue is with the device's wireless adapter. Ensure Wi-Fi is enabled (check hardware switches and Fn key combos). Disable and re-enable the adapter in Device Manager. Update or reinstall the Wi-Fi driver from your laptop manufacturer's website. Run the Windows Network Adapter troubleshooter. If nothing works, the wireless hardware may have failed.

Why does my Wi-Fi keep disconnecting?

Common causes include wireless interference from other devices on the 2.4 GHz band, power management settings that disable the adapter to save battery, router overheating, outdated firmware or drivers, and being at the edge of Wi-Fi range. Try switching to 5 GHz, disabling power saving for the adapter, updating drivers, and moving closer to the router.

How do I restart my router properly?

Unplug the router from power (and the modem if separate), wait 30 seconds, then plug the modem back in first and wait 1–2 minutes for it to fully boot. Then plug the router in and wait another 1–2 minutes. Do not press the reset button unless you want to factory reset and erase all settings.

Why is my Wi-Fi slow but my internet speed test is fast?

If wired speed tests show fast results but Wi-Fi is slow, the bottleneck is the wireless connection between your device and the router. Common causes: distance and obstacles, channel congestion, using 2.4 GHz instead of 5 GHz, too many connected devices, and outdated router hardware. Use a Wi-Fi analyzer app to check signal strength and channel conditions.

How do I check if my ISP is having an outage?

Check your ISP's status page or social media from your phone (using cellular data). Visit downdetector.com for real-time outage reports. Check your modem's status lights — if the internet light is off, the ISP connection is down. Call your ISP's support line; automated messages often announce known outages.

Should I use the 2.4 GHz or 5 GHz Wi-Fi band?

Use 5 GHz when you're close to the router and need fast speeds — it offers higher bandwidth but shorter range. Use 2.4 GHz when you're far from the router or behind walls — it has better range and penetration but lower speeds. If your router supports band steering, enable it to let the router decide automatically.

How do I factory reset my router?

Press and hold the small reset button on the back of the router (use a paperclip) for 10–15 seconds until the lights flash. Wait 2–3 minutes for it to reboot. All settings revert to factory defaults — you'll need to reconfigure the Wi-Fi name, password, and any custom settings. The default credentials are on the router's sticker. Only factory reset as a last resort.