You're in the middle of a video call or a big download, and suddenly your Wi-Fi drops. The little globe icon pops up, everything spins, and then it reconnects 10 seconds later. It happens again five minutes later. If you're on Windows 11, this is a classic symptom. I've seen it on Dell XPS 13s, Lenovo ThinkPads, even a custom desktop with a mediocre USB Wi-Fi dongle.
The root cause is almost always one of two things: the Wi-Fi adapter's power saving mode is too aggressive, or the driver is a garbage version that Microsoft pushed as a "compatible" update. Both are easy to fix.
Why Does Windows 11 Kill Your Wi-Fi?
Windows 11, like Windows 10 before it, has a power management setting that lets the system turn off your Wi-Fi adapter to save battery. It sounds good in theory, but in practice, it's terrible. The adapter drops off, and then takes forever to come back. On AC power, that setting should never be on.
Also, Windows Update loves to install "driver updates" for your network card that are older or less stable than what the manufacturer released. I had a client last month whose HP EliteBook kept dropping every 3 minutes—turns out Windows had rolled back his Intel Wi-Fi driver without telling him.
The Fix: Stop Windows From Messing With Your Wi-Fi
Here's the step-by-step that works in almost every case. It takes about 5 minutes.
- Turn off power saving on the adapter. Press
Win + Xand select Device Manager. Expand Network adapters, right-click your Wi-Fi adapter (look for Intel, Realtek, or Qualcomm), and choose Properties. Go to the Power Management tab, uncheck "Allow the computer to turn off this device to save power", and click OK. - Reinstall the driver from scratch. In the same Device Manager, right-click the adapter, choose Uninstall device, and check "Delete the driver software for this device" if it appears. Then click Scan for hardware changes in the toolbar. Windows will reinstall a fresh driver—hopefully a better one.
- Update the driver manually. Instead of waiting for Windows Update, go to your laptop manufacturer's support site (Dell, Lenovo, HP, etc.) or the adapter maker's site (Intel, Realtek). Download the latest Wi-Fi driver for your exact model and install it. Ignore the warning that says "already up to date."
- Check the power plan. Open Control Panel, go to Power Options, and select High performance (or at least Balanced). Then click Change plan settings for your active plan, then Change advanced power settings. Look for Wireless Adapter Settings and set Power Saving Mode to Maximum Performance.
- Flush the DNS and reset Winsock. Open Command Prompt as administrator and run these three commands, one at a time:
ipconfig /flushdns
netsh winsock reset
netsh int ip reset
Reboot after those. It clears up any weird state that might be messing with your connection.
That's the core fix. If you've done all that and you're still dropping, move on to the next section.
Still Dropping? Check These Three Things
Sometimes the problem isn't Windows at all. It's the environment or the router.
First, check the signal strength. Open a Command Prompt and type netsh wlan show interfaces. Look at the Signal percentage. If it's below 50%, you're too far from the router. Move closer or get a Wi-Fi extender. I've fixed more dropouts with a $50 access point than with any driver tweak.
Second, is your router's firmware ancient? Log into your router's admin page (usually 192.168.1.1 or 192.168.0.1) and check for firmware updates. ISP-provided routers often ship with buggy firmware that causes random disconnects for all devices. I've seen a Netgear router from 2015 that would drop every device at 2 AM—firmware update fixed it.
Third, check for interference. If you live in an apartment building, your neighbor's Wi-Fi might be stomping on your channel. Use a free tool like Wireshark or WiFi Analyzer to see which channels are crowded. Set your router to a less congested channel, or switch to 5 GHz if you're still on 2.4 GHz. 2.4 GHz is like a highway at rush hour—everyone's on it.
If you've done all that and it still drops, then you're looking at a hardware failure. I hate to say it, but Wi-Fi cards do die. If the adapter is removable, try swapping it. If it's soldered on, a USB Wi-Fi dongle is a cheap workaround. I've kept an old desktop alive that way for two years.