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Wi-Fi keeps disconnecting: a diagnostic order that works

By Editorial Team Published 2 min read
os windows 11 / general tested 2026-09-09 retest 2027-03 by editorial team
Quick Fix
01 Check another device on the same Wi-Fi. If it also drops, the problem is your router — restart it (power off 30 seconds, back on).
02 If only one device drops, restart just that device and move closer to the router to rule out weak signal.
tested windows 11 / general · 2026-09-09

Random Wi-Fi drops are frustrating because the cause could be the router, one device, the signal, or your internet line — and most guides jump straight to fixes without telling you which one you have. Isolate it first; it saves an hour of changing settings that were never the problem.

Step 1 — isolate the cause

  • Does another device drop too? If your phone and laptop both lose Wi-Fi at the same time, it’s the router or the internet line, not the device. If only one device drops, it’s that device.
  • Does it only happen far from the router? If moving closer stops the drops, it’s a signal/coverage problem.
  • Does it happen everywhere except home? Then your router or ISP is the suspect.

If it’s one device (usually a Windows laptop)

1. Stop Windows powering down the Wi-Fi adapter

This is the single most common laptop cause. Open Device Manager > Network adapters, right-click your Wi-Fi adapter, Properties > Power Management, and untick “Allow the computer to turn off this device to save power.”

2. Update the Wi-Fi driver from the maker’s site

Don’t rely on “Update driver” in Windows — download the current WLAN driver directly from your laptop manufacturer’s support page for your exact model. Bad or outdated Wi-Fi drivers cause most of the remaining laptop drops.

If it’s the router (all devices drop)

1. Restart it properly

Power the router off for a full 30 seconds before switching it back on. This clears the most common cause of periodic drops for everyone on the network.

2. Turn off band steering (“Smart Connect”)

Many dual-band routers hand devices back and forth between the 2.4 GHz and 5 GHz bands, and some devices drop briefly each time. In your router settings, disable Smart Connect / band steering and give the two bands separate names, then connect your device to the 5 GHz network when you’re near the router.

3. Change the Wi-Fi channel

In a crowded building, interference from neighbours’ networks causes drops. Set the 2.4 GHz band to channel 1, 6 or 11 (whichever is least used nearby) rather than “Auto”.

When it’s a hardware or line problem

If every device drops at the same times regardless of settings, and restarting the router only helps briefly, the fault may be the router itself (ageing units overheat and drop) or your internet line. Check whether the drops correlate with the router feeling hot, and ask your ISP to test the line before buying new hardware.

Frequently asked questions

Should I use 2.4 GHz or 5 GHz?

5 GHz is faster and less congested but has shorter range. Near the router, use 5 GHz; far away or through walls, 2.4 GHz holds a connection better.

“Forget network” and reconnect — does that help?

Sometimes, for one device with a corrupted saved profile. Forget the network, then reconnect with the password. It’s harmless to try.

Could it be my antivirus or VPN?

Occasionally. A misbehaving VPN or third-party firewall can drop Wi-Fi; disable it briefly to test whether the drops stop.

Sources