Quick answer
WiFi disconnects are most often caused by channel interference, outdated router firmware, network adapter driver issues, or power saving. First check the channel and update firmware, then the driver, and disable automatic adapter turn-off. If disconnects continue on all devices, the problem is likely the router or your provider.
How to recognize the problem
- Connection drops for a few minutes then comes back on its own
- WiFi icon on the computer occasionally shows limited access
- Phone keeps disconnecting from the network and asks for the password
- Disconnects are more frequent in the evening or when there are many nearby networks
- Internet briefly disappears on all devices at the same time
Most common causes
Congested WiFi channel
If several neighboring networks use the same channel, interference and occasional disconnects occur. The 2.4 GHz band is especially sensitive, particularly in apartment buildings.
Outdated router firmware
Old firmware can have bugs that cause instability, especially on cheaper models. Manufacturers occasionally release fixes.
Network adapter driver issue
Windows updates sometimes install an incompatible driver or conflict with an existing one. The symptom is connection drops only on that computer.
Power saving on the adapter
Windows can turn off the WiFi adapter to save battery, causing short disconnects. This is a common cause on laptops.
Overloaded router or provider
A large number of connected devices or an outdated router can cause occasional stalls. Sometimes the problem is on the provider's side.
Step-by-step fix
- 1
Check if the problem affects all devices
If WiFi drops on both the phone and the computer at the same time, the problem is in the router or network. If it drops on only one device, focus on that device (driver, settings). Note the times of disconnects to spot a pattern.
- 2
Change the WiFi channel on the router
Log in to the router administration (usually
192.168.1.1or192.168.0.1). In the wireless section (Wireless), find the channel selection (Channel). For 2.4 GHz choose 1, 6, or 11, and for 5 GHz choose the least crowded channel. Save and restart the router. - 3
Update the router firmware
In the router administration, look for the firmware update option (the name depends on the model, e.g.
Firmware UpdateorFirmware Upgrade, often in theAdministrationorSystem Toolsmenu). Download the latest version from the manufacturer's official website and follow the instructions carefully. Do not interrupt the process or unplug the router while it is running. - 4
Update the WiFi adapter driver
Open
Device Manager(typeDevice Managerin the Start menu). UnderNetwork adapters, find your WiFi adapter, right-click it, and selectUpdate driver. If Windows does not find a newer one, download the driver from your computer manufacturer's website. - 5
Disable power saving on the adapter
In
Device Manager, right-click the WiFi adapter and openProperties>Power Management. UncheckAllow the computer to turn off this device to save power. ClickOKand restart the computer. - 6
Reset network settings in Windows
Depending on your Windows version, open
Settings>Network & internetand findNetwork reset(in Windows 11:Advanced network settings>Network reset). Before resetting, note your VPN and proxy settings and WiFi network details, as some of them may be removed. ClickReset nowand confirm. The computer will restart and network adapters will return to default settings. Reconnect to WiFi. - 7
Check network load and number of devices
In the router administration, view the list of connected devices (
Connected devices). Disconnect unnecessary devices and check if any device is downloading large amounts of data. Limit the number of simultaneous connections if your router supports it. - 8
Restart the router and modem
Unplug the router and modem from power, wait 30 seconds, then plug them back in order: first the modem, then the router. Wait for all lights to stabilize before reconnecting devices.
If nothing helps: advanced troubleshooting
If disconnects continue, check whether the problem is the WiFi signal or the internet connection. Connect the computer with a LAN cable and monitor whether disconnects still occur. If the wired connection is stable, the problem is the wireless signal or the router. In that case, consider adding an access point or a mesh system. Also, check the router log (System Log) for errors. If disconnects coincide with the operation of a device (microwave, cordless phone), move them away. For business networks with multiple users, consider a router that supports more clients and QoS.
How to prevent it
- Regularly update router firmware and network adapter drivers
- Place the router in a central location, away from metal objects and devices that interfere with the signal
- Use the 5 GHz network for devices close to the router
- Restart the router occasionally and check the list of connected devices
When to call a professional
If you have tried all the steps and disconnects continue on all devices, or if you have a business network with multiple users, contact IT support. They can analyze the router log in detail, check the signal, and determine whether equipment replacement is needed.
IT infrastructure maintenance · Servers, networks, backup, security and helpdeskFAQ
Why does WiFi drop only on my laptop while the phone works fine?
The problem is most likely the WiFi adapter driver or power saving. Update the driver and disable the option for Windows to turn off the adapter to save power. If that does not help, reset network settings, but note your VPN and WiFi details first.
Can changing the channel on the router stop disconnects?
It can, if the cause is interference from neighboring networks. Choose the least crowded channel, especially on 2.4 GHz. WiFi analyzer tools can show which channels are congested.
How do I know if the problem is my provider and not my router?
If disconnects also occur on a LAN cable and the modem lights indicate signal loss, the problem is likely with your provider. Call customer support and report the disconnects with exact times.