Fix WiFi That Keeps Disconnecting on Your Laptop

The most common cause isn't your router — it's Windows' power management aggressively turning off your WiFi adapter to save battery. Start with the free software fixes before assuming a hardware problem.

Step 1 — Free Fixes (Do These First)

1. Disable WiFi Power Management: Open Device Manager → Network Adapters → right-click your WiFi adapter → Properties → Power Management tab → uncheck 'Allow the computer to turn off this device to save power.' This fixes 60% of cases instantly.
2. Update your WiFi driver: In Device Manager, right-click your WiFi adapter → Update Driver → Search automatically. Outdated drivers are the #2 cause.
3. Forget and reconnect to your network: Settings → Network → WiFi → Manage Known Networks → Forget your network → reconnect fresh. Clears corrupted saved credentials.
4. Change your router's WiFi channel: Log into your router (usually 192.168.1.1) and switch from Auto to a specific channel (1, 6, or 11 for 2.4GHz). Interference from neighbours is a silent killer.
5. Disable 'Auto-switch to better network': Settings → Network → WiFi → disable 'Let Windows manage WiFi connections.' Stops your laptop from wandering to weaker signals.

Step 2 — Cheap Hardware Fixes ($15–40)

1. Move closer to your router to test if signal strength is the issue. If WiFi is stable close-up, you need a WiFi extender or a USB WiFi adapter with a better antenna.
2. Use a USB WiFi adapter — your internal adapter may be failing or have a weak antenna. A $20–35 USB adapter often outperforms built-in hardware.

Step 3 — Advanced Fixes

1. Reset TCP/IP stack: Open Command Prompt as Admin and run: netsh winsock reset then netsh int ip reset then restart. Fixes software-layer corruption.
2. Check for Windows Update conflicts: A bad Windows Update can break WiFi drivers. Check Settings → Windows Update → View Update History for recent installs before the disconnects started.
3. Set DNS to a reliable server: Open Network adapter settings → IPv4 → set Preferred DNS to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare). Fixes drops that are actually DNS timeouts, not real disconnections.

Step 4 — Rule Out the Router

1. Test your phone or another device on the same network. If they also drop, the issue is your router or ISP — not the laptop.
2. If the router is 5+ years old and warm to the touch, it may be overheating — a ventilated spot or a replacement router will fix it.

Pro tip: Run WifiInfoView (free, Nirsoft) to see your signal strength in real-time and detect channel congestion from neighbouring networks. If your signal drops below -70 dBm, no software fix will help — you need a physical solution like a WiFi extender, powerline adapter, or USB adapter with an external antenna.