Why does my WiFi keep disconnecting?

Acutis · plain-English network help · updated June 2026

Why your WiFi keeps disconnecting

If your wifi keeps disconnecting — dropping for a few seconds, then reconnecting, over and over — the cause is usually one of a handful of culprits. The frustrating part is that the symptom looks the same whether the problem is in your laptop, your router, or the airwaves between them. This guide walks through the common causes in roughly the order worth checking, with concrete fixes for each.

The usual reasons WiFi keeps dropping:

• Outdated or buggy WiFi driver on your computer.
• Power-saving settings that switch the WiFi adapter off to save battery.
• Band steering bouncing your device between 2.4GHz and 5GHz.
• Channel congestion from neighboring networks.
• An overloaded or aging router that needs a reboot or firmware update.
• A weak signal at the edge of range that keeps cutting out.

Step 1: Narrow it down

Before changing anything, figure out the scope. It saves hours.

• Does it drop on every device or just one? If only one laptop or phone disconnects, the problem is that device. If everything drops at once, look at the router or internet line.
• Does it drop at random, or at a set time? Regular drops can point to a scheduled router reboot, a neighbor's device, or interference from an appliance.
• Does it drop only in one room? That points to weak signal and coverage rather than a fault.

Step 2: Fix the device (one device dropping)

Update the WiFi driver

An out-of-date wireless driver is the most common cause of one machine dropping. On Windows, open Device Manager, expand Network adapters, right-click your WiFi adapter, and choose Update driver. For the most reliable result, download the latest driver from the laptop or adapter maker's site rather than relying on Windows. On a Mac, install the latest system updates, which include WiFi drivers.

Turn off power saving on the adapter

Windows often powers the WiFi adapter down to save battery, which drops the connection. In Device Manager, open your WiFi adapter, go to the Power Management tab, and uncheck Allow the computer to turn off this device to save power. Then in Control Panel → Power Options, set the wireless adapter to Maximum Performance.

Forget and rejoin the network

A corrupted saved profile causes repeat drops. Forget the network in your WiFi settings, then reconnect with the password. While you are there, renew the connection from a command prompt:

• ipconfig /release then ipconfig /renew to get a fresh address.
• ipconfig /flushdns to clear stale name lookups.

Step 3: Tame band steering

Many routers advertise 2.4GHz and 5GHz under one network name and "steer" devices between them. Some laptops handle the handoff badly and drop during the switch. The fix is to split the bands into two separate network names in your router settings, then connect each device to a single band. Use 5GHz near the router and 2.4GHz farther away. A device locked to one band can't be bounced off it.

Step 4: Fix the router and airwaves (everything dropping)

• Reboot the router. Unplug it for 30 seconds and power it back on. A router that has run for months can develop memory leaks that cause periodic drops. This clears them.
• Update the firmware. Log into the router's admin page and check for a firmware update. Manufacturers fix stability bugs this way.
• Change the WiFi channel. Congestion from neighbors causes drops. Switch the 2.4GHz band to channel 1, 6, or 11, and let the 5GHz band auto-select. Set the channel manually if auto keeps landing on a busy one.
• Reduce the load. Cheap routers choke when many devices stream at once and start dropping connections. If drops happen during heavy use, the router may simply be underpowered.
• Check for overheating. A router crammed in a hot, enclosed space can crash and reboot. Give it airflow.

Step 5: Rule out the internet line

If every device drops at the same moment and the router's internet light flickers, the problem may be upstream — a loose coax cable, a failing modem, or an unstable line from your provider. Check that all cables are snug, reboot the modem, and if drops continue across all devices with no clear cause, contact your internet provider to test the line.

If nothing has worked

When you have updated drivers, rebooted the router, and changed channels but it still drops, the next questions are: is the WiFi adapter itself failing, or is the router on its way out? A quick way to test is to plug the computer into the router with an Ethernet cable. If the wired connection is rock solid, the problem is wireless — adapter, signal, or router radio. If even the wired connection drops, the fault is the router or the internet line.