Windows Wi-Fi Keeps Dropping? Diagnose the Router, Adapter, and DNS in That Order

Intermittent Wi-Fi is frustrating because the same symptom can come from four different layers: the internet connection, the router, the wireless link, or Windows itself. Resetting everything at once destroys useful evidence. A better diagnosis changes one layer at a time.

1. Define the failure

When the connection drops, check whether the Wi-Fi icon disconnects or remains connected with no internet access. Test another device on the same network. Then connect the affected PC to a different network or phone hotspot if available.

• If every device fails, investigate the router or internet service.
• If only one PC fails on every network, focus on its adapter, driver, or Windows configuration.
• If the PC fails only on one router, check band, channel, encryption, and router firmware compatibility.

2. Run the built-in checks

Open the Get Help app and run the network troubleshooter. Also forget and reconnect to the affected Wi-Fi network after confirming the password. This recreates the saved profile without altering every network adapter on the machine.

3. Test the router and radio link

Move close to the access point and compare 2.4 GHz and 5 GHz bands if both are available. A strong signal that loses internet access points in a different direction from a weak signal that disappears completely. Restarting the router is reasonable, but record whether the fault returns at the same time or under the same workload.

4. Refresh the Windows network stack

Microsoft documents the following commands for an elevated terminal. Run them in order, then restart:

netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns

If the Wi-Fi link stays connected but websites fail by name, compare a DNS problem with a total loss of connectivity before changing DNS providers.

5. Inspect the adapter and driver

In Device Manager, note the exact wireless adapter model and driver version. Check Windows Update and the PC maker for a newer compatible driver. If the problem began immediately after a driver update, the previous tested driver may be more appropriate.

Microsoft also recommends uninstalling the adapter in Device Manager and restarting so Windows can reinstall it. Download a known-good driver first, especially if the machine has no Ethernet connection.

6. Keep Network reset for last

Network reset removes and reinstalls network adapters and returns their settings to defaults. It can also require VPN clients and virtual switches to be reconfigured, and known networks may become public profiles. Use it only after the narrower tests have failed.

The goal is not to collect more reset buttons. It is to identify which layer breaks. Once you know whether the fault follows the device, network, adapter, or name-resolution path, the fix becomes smaller and more durable.