WiFi that keeps disconnecting on your laptop usually has one of three causes: your laptop’s power settings, a faulty WiFi driver, or a struggling router. Work through the fixes below in order and you will find the culprit fast. This guide also covers the two close cousins of the problem: WiFi that is connected but shows no internet, and WiFi that drops every time your laptop sleeps.
Where It Breaks: Local Link, Router, or ISP
Before you change anything, find out where the connection is breaking. There are three links in the chain:
- The local link is the wireless connection between your laptop and your router. If only your laptop drops while your phone stays connected, the local link is the problem.
- The router link is your router’s connection to the internet. If every device drops at the same time, suspect the router or the line.
- The ISP link is your provider’s network. If your router’s lights show a fault and your neighbours have the same issue, the problem is upstream.
A quick test saves hours of guessing. Next time the WiFi drops, check your phone immediately. Phone still online means your laptop is the culprit. Everything down together means your router or your provider is. If you have already narrowed it down to a Windows 11 laptop while other devices behave, our guide to WiFi disconnecting on Windows 11 but not other devices goes deeper on that exact scenario.
WiFi Keeps Disconnecting: Fixes in Order
Do these in order. Stop when the drops stop, because each step targets the most common cause first.
1. Restart properly, not quickly
Turn your router off at the plug, wait 30 seconds, and turn it back on. Then restart your laptop with a full shutdown, not sleep or hibernate. A proper restart clears the DHCP lease and the router’s connection table, which fixes a surprising number of flaky connections. This is the step everyone skips and the step that fixes the most cases.
2. Stop Windows switching off your WiFi adapter
Windows often powers down the WiFi adapter to save battery, then fails to wake it cleanly. This is the single most common cause of repeated drops on laptops.
- Press Windows + X and open Device Manager.
- Expand Network adapters, right click your WiFi adapter and choose Properties.
- Open the Power Management tab and untick “Allow the computer to turn off this device to save power”.
- Click OK and restart the laptop.
While you are there, check Settings, System, Power and battery. If your power mode is set to “Best power efficiency”, try “Balanced” or “Best performance” for a day and see if the drops stop.
3. Update, or roll back, the WiFi driver
Windows updates break WiFi drivers regularly. If the drops started after an update, the driver is suspect number one.
- In Device Manager, right click the WiFi adapter, choose Update driver, then “Search automatically for drivers”.
- If the drops began right after a Windows update and the newest driver does not help, go to Properties, Driver tab, and choose Roll Back Driver.
- For stubborn cases, download the driver from your laptop maker’s support page rather than relying on Windows Update.
4. Forget the network and rejoin it
Corrupt saved network profiles cause drops that look like hardware faults. Go to Settings, Network and internet, WiFi, Manage known networks, select your network and choose Forget. Then reconnect and type the password fresh. This also picks up any changed router settings your saved profile was ignoring.
5. Move off the crowded channel
WiFi channels are shared airspace. In a block of flats, twenty routers shouting on the same channel will knock each other offline. This shows up as disconnects at busy times, especially evenings.
- Log in to your router (usually 192.168.1.1 or 192.168.0.1 in a browser).
- Find the wireless settings and switch the 2.4 GHz channel to 1, 6 or 11, whichever is least used near you. A free WiFi analyser app on your phone shows the crowding.
- If your router broadcasts one combined network name for both bands, consider splitting them into separate 2.4 GHz and 5 GHz names. Laptops that keep hopping between bands are a classic cause of repeated drops.
6. Reset the network stack
If nothing else worked, reset everything Windows knows about networking. Go to Settings, Network and internet, Advanced network settings, Network reset, and choose Reset now. Your laptop will restart and rebuild its network configuration from scratch. You will need to rejoin your WiFi network afterwards, so have the password handy.
Connected but No Internet: the Two-Minute Tests
“Connected, no internet” means your laptop has joined the router’s WiFi network fine, but nothing is getting past the router to the wider internet. The local link works; the break is at the router or the ISP. Run these tests in order:
- Check another device. If your phone on the same WiFi also shows no internet, the router or provider is at fault. If your phone works fine, the problem is your laptop’s settings.
- Reboot the router. Off at the plug, 30 seconds, back on. Wait two full minutes before testing.
- Release and renew your IP address. Open Command Prompt and type
ipconfig /releasethenipconfig /renew. This fixes the common case where your laptop is holding a stale or conflicting IP address. - Flush the DNS cache. In the same Command Prompt window, type
ipconfig /flushdns. Corrupt DNS entries make it look like the internet is down when it is only name resolution that has failed. - Try a different DNS server. Set your adapter’s DNS to 8.8.8.8 and 8.8.4.4 (Google) or 1.1.1.1 (Cloudflare) temporarily. If pages load, your ISP’s DNS was the problem.
- Pause your VPN or security software. VPNs and some antivirus suites with “web protection” features can block all traffic when they glitch. Turn them off for two minutes as a test. If you use one regularly, read our breakdown of VPN vs proxy: which one do you need to make sure your setup is sound.
- Check for a captive portal. On hotel, cafe or office WiFi, open a browser and try a plain non-HTTPS site. A login page you never completed is the classic silent blocker.
WiFi Drops When Your Laptop Sleeps: Why It Happens
This one has a specific cause and it is built into modern laptops on purpose. Most new laptops use Modern Standby instead of the old sleep mode. Modern Standby keeps the machine half awake so it can fetch emails and updates, and it manages the WiFi adapter aggressively to save battery. When the handoff between the sleep state and full wake goes wrong, the WiFi adapter never comes back online properly.
The fix is the same power management setting from step 2 above, applied twice:
- In Device Manager, untick “Allow the computer to turn off this device to save power” on the WiFi adapter.
- Then, in the same Properties window, check the Advanced tab. If there is a “Power Saving Mode” or “Roaming Aggressiveness” entry, set power saving to Maximum Performance and roaming to a middle value.
- Finally, go to Settings, System, Power and battery, Screen and sleep, and check what your laptop is set to do. If it sleeps after two minutes on battery, stretch that out while you test.
One more culprit: some laptops have a BIOS or UEFI setting that controls wireless behaviour during sleep. If the drops survive everything above, check your manufacturer’s support page for a BIOS update mentioning wireless or Modern Standby.
Router-Side Fixes Worth Trying
If the drops hit every device, your laptop is innocent and the router needs attention.
- Move it. Routers stuffed behind the TV or inside a cupboard overheat and lose signal. Put it high, central and in the open. Thick walls and mirrors are WiFi killers.
- Update the firmware. Log in to the router admin page and check for firmware updates. UK ISP routers from BT, Sky, Virgin Media and TalkTalk usually update themselves, but a manual check catches the ones that do not.
- Split the bands. As mentioned above, giving 2.4 GHz and 5 GHz separate network names stops devices hopping between them. Keep laptops on 5 GHz when close to the router and 2.4 GHz for range.
- Check for overheating. A router that is hot to the touch and drops connections every evening may simply be dying. ISPs will usually replace a faulty hub free of charge.
- Reduce the load. Dozens of smart home gadgets plus streaming plus video calls can overwhelm a basic ISP-supplied router. If disconnects happen when everyone is home, the router may be underpowered rather than broken.
Heavy evening congestion also shows up as lag rather than full drops. If games and video calls stutter while browsing survives, see our guide on why online games keep lagging for the latency side of the story.
When the Problem Is Your Broadband Provider
Suspect the ISP when every device drops at once, the router’s broadband light goes red or flashes, and the drops follow no pattern you can tie to your own equipment. Before you call:
- Check your provider’s service status page and a site like Downdetector for outage reports in your area.
- Note the times of three recent drops. Support teams take you far more seriously with a pattern than with “it keeps happening”.
- Test with a wired Ethernet connection if you can. Drops on wired too prove the fault is the line, not WiFi.
- Ask the provider to run a line test and check your line’s error rates. High error rates mean a faulty line or a dying router, and that is their problem to fix.
FAQs
Why does my WiFi keep disconnecting only on my laptop?
Because the fault is almost always in the laptop’s own settings: Windows power management switching the adapter off, a broken driver from a recent update, or the laptop hopping between the 2.4 GHz and 5 GHz bands. Start with the power management fix in step 2.
Why does my laptop say connected but no internet?
Your laptop has joined the router’s wireless network but cannot reach beyond it. The usual causes are a stale IP address, broken DNS, an unfinished captive portal login, or a glitching VPN. The two-minute tests above clear each of these in turn.
How do I stop WiFi disconnecting when my laptop sleeps?
Stop Windows from powering down the WiFi adapter. In Device Manager, open the WiFi adapter’s Properties, go to the Power Management tab and untick “Allow the computer to turn off this device to save power”. This fixes the Modern Standby wake-up failure behind most sleep drops.
Can a bad router cause WiFi to keep disconnecting?
Yes. Overheating, outdated firmware, a congested channel and an underpowered ISP-supplied hub all cause drops that hit every device. If your phone drops at the same time as your laptop, work through the router-side fixes before blaming the laptop.
The Bottom Line
Most laptop WiFi drops come down to three things: Windows switching the adapter off to save power, a driver broken by an update, or a crowded channel. Fix the power setting first, then the driver, then the channel, and nine times out of ten the disconnects stop. When every device drops together, look at the router and the line instead of the laptop. And when the WiFi dies every time the lid closes, blame Modern Standby and take the adapter’s power management back into your own hands.
