How to Fix No Internet Connection?
Learn how to troubleshoot and fix common causes of no internet connection issues.
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Overview
A "No Internet Connection" error can happen for many reasons, including router issues, ISP outages, faulty cables, weak Wi-Fi, or incorrect device settings.
Before assuming your internet service is down, work through the steps below to isolate whether the issue is with one device, your router, or your provider.
Example
Use this section as your baseline before working through the symptoms, commands, and fixes below.
Restart Your Router and Modem
Power cycle your modem and router before changing advanced settings.
Steps:
Unplug the modem and router from power.
Wait at least 30 seconds.
Plug the modem back in and wait for it to fully reconnect.
Plug the router back in.
Test your internet connection again.
A simple restart often clears temporary connection issues.
Test Other Devices
Check whether other devices can connect to the internet.
Examples:
Smartphone
Laptop
Tablet
Gaming console
If only one device is affected, the issue is probably with that device. If every device is offline, focus on the modem, router, cables, or ISP.
Check for ISP Outages
Sometimes the problem is outside your home network.
You can:
Visit your ISP's website
Check your ISP's outage page
Contact customer support
Check outage reporting services
If an outage exists, you may need to wait until service is restored.
Check Network Cables
Inspect all cables connected to your modem and router.
Look for:
Loose power cables
Loose coax or fiber connections
Damaged Ethernet cables
Bent connectors
Router or modem lights that are off or red
Reseat each cable firmly and replace damaged cables if needed.
Check Wi-Fi Connection
If wired devices work but Wi-Fi devices do not, the issue may be wireless.
Check for:
Weak Wi-Fi signal
Airplane mode enabled
Device connected to the wrong network
Router Wi-Fi disabled
Too much distance from the router
Move closer to the router and reconnect to the correct Wi-Fi network.
Restart the Device
If only one device has no internet, restart that device.
This can clear:
Stale network settings
Temporary adapter issues
Failed DHCP leases
DNS cache problems
After restarting, reconnect to the network and test again.
Check IP and DNS Settings
Invalid IP or DNS settings can prevent internet access even when the device is connected to Wi-Fi.
Windows:
ipconfig /all
Look for:
A valid IP address
A default gateway
DNS servers
DHCP enabled status
If the IP address begins with 169.254, the device did not receive a valid address from DHCP.
Run Basic Network Commands
Use these commands to narrow down the issue.
Test internet reachability:
ping 8.8.8.8
Test DNS resolution:
ping google.com
Check DNS lookup:
nslookup google.com
Renew the DHCP lease on Windows:
ipconfig /release
ipconfig /renew
If ping 8.8.8.8 works but ping google.com fails, DNS is likely the problem.
When to Contact Your ISP
Contact your ISP if:
All devices are offline
The modem shows warning or offline lights
Cables are connected correctly
Restarting equipment does not help
Your ISP reports an outage
The issue started suddenly without changes to your network
Your ISP can check signal levels, outages, modem status, and account provisioning.
Quick Troubleshooting Checklist
Key Takeaway
Most "No Internet Connection" issues can be resolved by restarting network equipment, checking cables, testing other devices, verifying ISP status, and reviewing IP or DNS settings.
Work from the simplest causes first, then move toward device settings or ISP support.