Why does my WiFi keep disconnecting?

The most common causes are power management settings turning off the WiFi adapter, an outdated network driver, router channel congestion, or a weak signal. Start by updating your WiFi driver and disabling power saving on the adapter.

Why does my WiFi disconnect only on my laptop and not on other devices?

This usually points to a driver or power management issue specific to your laptop rather than the router. Try updating the WiFi adapter driver and setting it to maximum performance in Device Manager.

How do I stop Windows from turning off my WiFi adapter?

Open Device Manager, expand Network Adapters, right-click your WiFi adapter, choose Properties, go to the Power Management tab, and uncheck Allow the computer to turn off this device to save power.

Can a router cause WiFi to keep dropping?

Yes. Overloaded router channels, outdated firmware, or too many connected devices can all cause drops. Try changing your router channel to a less congested one, or restart the router and update its firmware.

Can load-shedding cause my WiFi to keep disconnecting?

Yes. Every time the power cuts and returns, your router and fibre ONT reboot and have to reconnect to your ISP, which drops every device. Repeated power loss also shortens router lifespan. A small UPS for your router and ONT keeps you online through shorter outages and prevents these drops.

How do I fix WiFi drops caused by channel congestion?

In flats, complexes and office parks, nearby routers compete on the same wireless channels and cause drops. Log in to your router's admin page, open the wireless settings, and change the 2.4GHz channel to 1, 6 or 11, or set it to Auto. Connecting devices to the less congested 5GHz band also helps.

WiFi Keeps Disconnecting - How to Fix It

What's actually happening when your WiFi keeps disconnecting

A WiFi connection that keeps dropping and reconnecting every few minutes is one of the most common problems we're called out for, and it's also one of the most misdiagnosed. People assume the router is broken or the internet line is faulty, when in reality the cause is usually something small and fixable: a power-saving setting switching the wireless adapter off, an outdated network driver, a congested wireless channel, or a weak signal that can't hold a stable link.

The frustrating part is that the symptoms look identical no matter what the cause is. Whether your internet keeps disconnecting on a single laptop, your WiFi drops on every device in the house at once, or your connection keeps dropping and reconnecting at random, the fix depends entirely on which of those underlying causes you're dealing with. This guide works through them in the order a technician would, starting with the quick checks and moving toward the ones that pin down the real culprit.

Common causes of WiFi that keeps dropping

Before jumping into fixes, it helps to know what you're actually looking for. In our experience supporting homes and businesses around Johannesburg, the overwhelming majority of "WiFi keeps disconnecting" cases come down to one of these:

Power management. Windows is quietly switching your WiFi adapter off to save power, especially on laptops. This is the single most common cause of one device dropping while others stay connected.
Outdated or corrupt network driver. The software that runs your wireless adapter has gone stale or glitched, causing it to lose the connection intermittently.
Channel congestion. In flats, complexes and office parks, dozens of nearby routers compete on the same wireless channels, and the interference forces drops.
Weak or borderline signal. You're far enough from the router that the link can hold briefly but can't sustain itself, so it keeps dropping and reconnecting.
Router firmware or overheating. An old firmware version, or a router that's been running hot for years, will drop connections under load.
ISP-side instability. This is less common, but a fibre or LTE line that's genuinely unstable will cause every device to drop together.

The steps below help you work out which one applies to you. Work through them in order, because each one either fixes the problem or rules a cause out.

Restart the router properly

It sounds too simple, but a proper power-cycle clears the router's memory, resets its connection to your ISP, and rebuilds the table that hands out addresses to your devices. A surprising number of intermittent-drop problems are caused by a router that's simply been running too long without a reset.

Unplug your router from the wall. Don't just press a button, pull the power
Wait a full 30 seconds so it discharges completely
Plug it back in and wait two to three minutes for it to fully reconnect

If the drops stop for a while and then return after a few days, that's a strong hint the router itself is the weak link, so note that and keep going.

Stop Windows from switching off your WiFi adapter

This is the fix that resolves the most cases, and almost nobody knows about it. By default, Windows is allowed to turn your wireless adapter off to save power. On a laptop especially, that means your WiFi quietly disconnects when the machine thinks it's idle, then scrambles to reconnect, which is exactly the "keeps dropping and reconnecting" pattern.

Right-click Start and open Device Manager
Expand Network Adapters
Right-click your WiFi adapter and choose Properties
Open the Power Management tab
Uncheck Allow the computer to turn off this device to save power and click OK

If your WiFi was disconnecting on one laptop but staying solid on phones and other devices, this is very likely your fix.

Forget and reconnect the network

Windows stores a saved profile for every network you connect to. When that profile becomes corrupted, often after a password change or a Windows update, it can cause repeated disconnections that no amount of restarting will fix. Deleting it and reconnecting fresh rebuilds it cleanly.

Go to Settings → Network & Internet → WiFi
Click Manage known networks
Select your WiFi network and click Forget
Reconnect by selecting it again and entering your password

Update the WiFi driver

An outdated or corrupt network adapter driver is one of the most common causes of intermittent drops, particularly after a major Windows update changes something the old driver wasn't built for. Updating it gives the adapter fresh, compatible software to run on.

Right-click Start and open Device Manager
Expand Network Adapters
Right-click your WiFi adapter and select Update driver
Choose Search automatically for drivers

For the most reliable result, it's worth downloading the latest driver directly from the laptop manufacturer's support page (Dell, HP, Lenovo and so on) rather than relying only on Windows, which often keeps an older version.

Check your signal strength and position

A weak signal causes intermittent drops that are genuinely hard to diagnose, because the connection looks fine until it suddenly isn't. If you're separated from the router by a couple of brick walls, which is common in older South African homes with solid construction, the link may simply be too borderline to hold.

Move your laptop or desktop into the same room as the router
Test whether the connection holds steady from there
If it stabilises, signal range or interference is your problem, not the device

If distance is the issue, a mesh WiFi system or a well-placed range extender usually solves it far better than repositioning a single router.

Change your WiFi channel to avoid congestion

If you live in a complex, flat block, or office park, your router is probably fighting for airtime with dozens of neighbouring networks on the same channel. That congestion causes drops that come and go depending on how busy everyone else's WiFi is, often worse in the evenings. Switching to a less crowded channel can clear it up instantly.

Open your router's admin page (usually 192.168.0.1 or 192.168.1.1 in a browser)
Log in and find the Wireless settings
Change the 2.4GHz channel to 1, 6, or 11, or set it to Auto
Where possible, connect devices to the 5GHz band, which is far less congested

Test another device to isolate the cause

This is the step that tells you where the problem really lives, and it's worth doing early if you're stuck. By comparing how different devices behave on the same network, you separate a router or line problem from a single-device problem.

If all devices keep dropping together → the issue is your router, its firmware, or your ISP line
If only one device drops → the problem is that specific PC (most likely power management or driver, covered in steps 2 and 4)

The load-shedding factor (and other local issues)

If you're in Johannesburg or anywhere in Gauteng, there's a cause that doesn't appear in any overseas troubleshooting guide: power interruptions. Every time the power cuts and comes back, your router reboots, renegotiates its connection with the ISP, and your devices have to reconnect. Routers that lose power repeatedly also tend to fail earlier than they should. If your WiFi drops line up with power events, a small UPS for your router and fibre ONT is one of the best-value fixes available, and it keeps you online through shorter outages too.

It's also worth knowing that the routers supplied by local ISPs (the Huawei and TP-Link units that come standard with many Telkom, Afrihost, Vumatel and Openserve fibre packages) vary a lot in quality. If you've worked through everything above and an older ISP-supplied router keeps dropping, replacing it with a better standalone router or mesh system frequently solves a problem that no amount of settings changes will.

If your WiFi keeps dropping even after trying these steps, there's almost always a specific cause behind it, whether it's interference, hardware limitations, a failing router, or how the network is configured. If you're based in Johannesburg or Gauteng and the issue keeps coming back, you're welcome to get in touch and have it tracked down properly.

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WiFi Keeps Disconnecting? Here's How to Fix It