First decide whether the problem is one device or the whole network, then power-cycle the modem and router. Open a website on a phone on the same Wi-Fi: if every device is offline, the fault is the modem, the router, or the internet service provider, so unplug both for 30 to 60 seconds and plug the modem back in first. If only the computer is offline, the fault is in Windows, so run the Network troubleshooter, then renew the IP address with ipconfig /renew, flush DNS, and reset the network stack with netsh winsock reset. Test the connection after each step, because a single fault usually accounts for the whole outage.
What Causes No Internet Connection?
No internet connection is caused by a break at one point along the path from the computer to the internet service provider. The first job is to locate that break, because the cause decides the fix. The four areas below cover almost every case on Windows.
Ranked from most to least common, the usual culprits are an ISP or router outage, a dropped Wi-Fi or Ethernet link, a wrong or expired IP address from DHCP, a DNS lookup failure, a corrupted network stack, an outdated adapter driver, an IP address conflict, and a VPN or firewall block. A frozen router is the single most likely cause, which is why it pays to test a second device before touching the computer.
How Do You Fix No Internet Connection?
Work from the fastest checks to a full network reset, and test the connection after each step. The order below moves from the network to the computer, so you do not run Windows commands for a fault that lives in the router.
- Check whether other devices work. Open a website on a phone or tablet on the same Wi-Fi, then switch it to mobile data to confirm. If every device is offline the problem is the network, so go to step two. If only the computer is offline, skip ahead to the troubleshooter.
- Power-cycle the modem and router. Unplug both for 30 to 60 seconds so they fully discharge and the provider clears the old session. Plug the modem in first and wait for its internet light to turn solid, then plug the router back in. A combined modem-router unit needs one power cycle.
- Run the Windows Network troubleshooter. Open Settings, then System, then Troubleshoot, then Other troubleshooters, and run Network and Internet. It tests the adapter, gateway, and DNS and applies common repairs automatically. On older builds, right-click the network icon and select Diagnose network problems.
- Renew the IP address and flush DNS. Open Command Prompt as administrator and run ipconfig /release, then ipconfig /renew, then ipconfig /flushdns. Confirm with ipconfig /all that the adapter shows a valid IPv4 address and a gateway. An address starting with 169.254 means DHCP failed, which points back to the router or cable.
- Reset the network stack. If access still does not return, run netsh winsock reset and netsh int ip reset to rebuild the Winsock catalog and TCP/IP stack, flush DNS once more, then restart the computer so the reset takes effect. Reconfigure any static IP or proxy afterward.
- Update or reinstall the adapter driver. Open Device Manager, expand Network adapters, right-click the Wi-Fi or Ethernet adapter, and choose Update driver. If that finds nothing, uninstall the device and restart to reinstall it, or download the latest driver from the PC or adapter maker, especially on Wi-Fi 6 and 6E adapters.
If the connection is active but websites will not load by name, set a public DNS server: open Settings, Network and Internet, the active network, edit the DNS assignment to Manual, and enter 1.1.1.1 (Cloudflare) with 8.8.8.8 (Google) as the alternate. A connection that pings 8.8.8.8 by number yet fails to open sites by name confirms a DNS fault. If a VPN was running, disconnect it fully and disable any leftover TAP virtual adapter, since a stalled tunnel can block all outbound traffic.
No Internet Connection Symptoms and Likely Causes
The table maps the symptom you see to its most likely cause and the first fix to try, so you can jump straight to the right step.
| Symptom | Most Likely Cause | First Fix to Try |
|---|---|---|
| No internet on every device | Router or ISP outage | Power-cycle the modem and router |
| Connected, no internet on one PC | Failed DHCP lease | ipconfig /release and /renew |
| Pings by number, sites fail by name | DNS failure | Set DNS to 1.1.1.1 |
| No connection after a Windows update | Corrupted network stack | netsh winsock reset |
| Adapter missing or with a warning icon | Outdated network driver | Update or reinstall the driver |
| Limited access after a VPN drop | Stalled VPN tunnel | Disconnect the VPN |
A network-wide outage almost always points to the router, the modem, or the provider, while a single-device failure points to the adapter, the driver, or the network settings in Windows. If the link drops over and over rather than failing once, the fix is in the guide to Wi-Fi that keeps disconnecting, and a dead wired port is covered in Ethernet not working. To understand the device that hands out addresses and routes your traffic, see what a router is.
Last Thoughts on No Internet Connection
No internet connection is resolved by deciding first whether one device or the whole network is offline, then working from the fastest checks to a full reset and testing after each step. If every device is down, power-cycle the modem and router and check the provider; if only the computer is down, run the Network troubleshooter, renew the IP address, flush DNS, and reset the stack. Most outages clear within a few minutes once the fix is aimed at the right layer.
A lost connection is one of the most common faults a computer throws, and the same locate-then-fix order applies to almost all of them. The hub page listing common PC problems connects every troubleshooting topic, from boot failures to slow performance, in one place.
Key Takeaways:
- Count the offline devices first: every device down is the network, one device down is the computer.
- Power-cycle the modem and router before any Windows command, unplugged for 30 to 60 seconds, modem back in first.
- Run the Network troubleshooter, then release and renew the IP and flush DNS to clear a failed DHCP lease.
- A 169.254 address means DHCP never answered, which points back to the router or the cable, not to Windows.
- Reset the stack with netsh winsock reset and netsh int ip reset when the outage survives an IP renew, then restart.
- If the link is active but sites fail by name, set DNS to 1.1.1.1, and disconnect any stalled VPN that blocks traffic.
Frequently Asked Questions (FAQs)
Why does it say no internet when Wi-Fi is connected?
The Wi-Fi link reached the router, but the router cannot reach the internet, or DHCP or DNS failed on the computer. Power-cycle the router first, then renew the IP address with ipconfig /renew and set DNS to 1.1.1.1.
How do I fix no internet on Windows 11?
Check a second device, then power-cycle the modem and router. If only the PC is offline, run the Network troubleshooter, renew the IP with ipconfig /renew, flush DNS, then reset the stack with netsh winsock reset if access does not return.
What does ipconfig /release and /renew do?
The release command drops the current IP address lease, and the renew command requests a fresh address from the router DHCP server. Together they fix a wrong or expired address that left the adapter unable to route.
How long should I leave the modem and router unplugged?
Unplug both for a full 30 to 60 seconds before plugging them back in. The wait drains stored state and lets the provider clear the old session, which a quick restart does not do. Plug the modem in first and wait for its light to turn solid.
What is a 169.254 IP address?
A 169.254 address is an automatic private address Windows assigns when the adapter cannot reach a DHCP server. It cannot route to the internet and signals a router or cable fault rather than a DNS or website problem.
Why is only one device offline when the rest work?
A single offline device points to that computer, not the network. The cause is usually its adapter, driver, IP lease, or DNS setting. Start with the Windows Network troubleshooter, then renew the IP and update the adapter driver.
