Fix Wi-Fi Disconnecting When PC Is Locked

If your Wi-Fi drops the moment you lock your PC, it’s usually a power management setting that lets Windows turn off the network adapter to save energy. This guide walks you through the exact settings to change so your connection stays active, plus fixes for related issues like driver or router problems. You’ll need Windows administrator access and the ability to open Device Manager and Power Options.

What You’ll Need

• Windows PC with administrator privileges
• Access to Device Manager and Control Panel
• Your Wi-Fi router’s login details (for later steps, optional)

Step-by-Step

1. Open Device Manager. Right-click the Start button and select “Device Manager” from the menu. If you’re on Windows 10 or 11, you can also press Win + X and choose it there.
2. Locate your Wi-Fi adapter. Expand the “Network adapters” section. Look for something with “Wireless”, “Wi-Fi”, or “WLAN” in the name (e.g., “Intel Wi-Fi 6 AX200”).
3. Open adapter properties. Right-click the adapter and select “Properties”.
4. Disable power saving. Go to the “Power Management” tab. Uncheck the box that says “Allow the computer to turn off this device to save power”. Click OK.
5. Open Power Options. Press Win + R, type control powercfg.cpl (or just powercfg.cpl), and press Enter. Alternatively, search “Power Options” in the Start menu.
6. Change advanced power settings. Next to your selected plan, click “Change plan settings”, then “Change advanced power settings”.
7. Adjust wireless adapter settings. In the Power Options dialog, scroll down to “Wireless Adapter Settings” and expand it. Then expand “Power Saving Mode”. Set both “On battery” and “Plugged in” to “Maximum Performance”. Click Apply and OK.
8. Update your Wi-Fi driver. Go back to Device Manager, right-click your Wi-Fi adapter, and select “Update driver”. Choose “Search automatically for drivers”. If Windows doesn’t find a new one, visit your laptop or adapter manufacturer’s website to download the latest driver manually.
9. Reinstall the driver (if needed). If updating doesn’t help, right-click the adapter in Device Manager, select “Uninstall device”, check “Delete the driver software for this device” (if visible), then restart your PC. Windows will reinstall the driver automatically.
10. Check your router’s settings. Log into your router’s admin page (usually via a browser at an IP like 192.168.1.1 or 192.168.0.1). Look for settings like “Wi-Fi Power Save”, “Beacon Interval”, or “DTIM Interval”. Disable or increase the power save mode, and set the beacon interval to a lower value (e.g., 50 ms). Save and reboot the router.
11. Disable fast startup (optional). Open Control Panel > Power Options > “Choose what the power buttons do”. Click “Change settings that are currently unavailable”, then uncheck “Turn on fast startup”. Save changes and restart.

Common Mistakes

• Only changing one setting. The adapter’s power management and the Windows power plan both affect Wi-Fi. You need to change both to see a consistent fix.
• Using a generic driver update tool. These often install outdated or incorrect drivers. Always download from the manufacturer’s official site.
• Forgetting to restart. Some changes require a reboot to take effect. Always restart your PC after making these changes.
• Assuming it’s a Windows issue. If the problem persists after all steps, it could be a router or ISP issue. Test with another device to isolate the cause.

Tips

• If you use a laptop, keep the power plan on “Balanced” but set the wireless adapter to “Maximum Performance” – this gives good battery life without sacrificing Wi-Fi.
• Update your router’s firmware. Many routers have a “Check for updates” button in the admin panel.
• Use the 5 GHz band if your router supports it – it’s less prone to interference and often has better power management behavior.
• If you’re tech-savvy, you can use the Command Prompt to check power settings: powercfg /q and look for the wireless adapter GUID.

Troubleshooting

If the Wi-Fi still disconnects after following all steps, try these:

• Check if the issue occurs on other devices. If yes, the problem is your router or internet service. Reboot the router and contact your ISP if needed.
• Run the Windows Network Troubleshooter. Go to Settings > Network & Internet > Status > “Network troubleshooter”. It can sometimes detect and fix adapter issues.
• Disable IPv6. In Network Adapter properties, uncheck “Internet Protocol Version 6 (TCP/IPv6)”. Some routers have buggy IPv6 implementations that cause disconnects.
• Change your Wi-Fi channel. In router settings, switch from “Auto” to a specific channel (e.g., 1, 6, or 11 for 2.4 GHz). Interference from neighbors can cause drops.
• Reset your network stack. Open Command Prompt as administrator and run: netsh winsock reset and netsh int ip reset, then restart.
• Check for overheating. If your laptop gets hot, the Wi-Fi card may throttle. Ensure vents are clear and consider a cooling pad.

Frequently Asked Questions

Why does my Wi-Fi disconnect only when the PC is locked?

Windows enters a low-power state when locked, and the network adapter may be turned off to save energy. The power management settings we changed prevent that.

Will these changes drain my battery faster?

Setting the wireless adapter to “Maximum Performance” can slightly increase power consumption, but the impact is usually minimal. You can keep it on “Medium Power Saving” if you notice a significant battery drain.

I don’t see a “Power Management” tab in adapter properties. What now?

Some drivers don’t expose this tab. Try updating the driver first. If it’s still missing, you can disable the adapter’s power saving via the registry, but that’s more advanced – search for “PowerPolicies” registry key for your adapter.

My Wi-Fi disconnects even when the PC is not locked. Is this the same issue?

Not necessarily. If it happens during active use, it could be driver issues, router problems, or interference. Try the driver update and router channel change steps anyway.

Can I set a different power plan just for when the PC is locked?

No, Windows doesn’t have a separate power plan for locked state. The settings apply globally, but you can create a custom plan that you switch to manually if you want.

Is there a way to keep Wi-Fi on during sleep?

Yes, you can set “Allow the computer to turn off this device” to off, and also in Power Options under “Sleep” > “Allow hybrid sleep” and “Allow wake timers” you can adjust behavior. But note that during sleep, the PC may still drop Wi-Fi by design.

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