What's going on

When a laptop's hotspot features stop working, the issue generally splits into two categories: your laptop cannot host a network for other devices, or your laptop refuses to connect to a mobile hotspot created by your smartphone.

Most hotspot failures are caused by background software conflicts, misconfigured virtual network adapters, or driver glitches following an operating system update. While it feels like a hardware breakdown when your network continuously drops, physical Wi-Fi card failures are actually rare compared to simple software mismatches.

Symptoms people notice

• The mobile hotspot toggle in system settings immediately flips back to "Off" or turns gray.
• Secondary devices connect to the laptop's hotspot, but fail to load websites or display a "No Internet, Secured" status.
• The laptop detects home Wi-Fi networks easily, but cannot see your smartphone's hotspot.
• Connecting to a mobile hotspot results in an immediate "Can't connect to this network" pop-up.
• The hotspot drops every few minutes, forcing you to turn Airplane Mode on and off to restore it.

Likely causes

1. Stopped Internet Connection Sharing (ICS) Service: Windows relies on the ICS background service to route internet traffic through virtual adapters. If this hangs, sharing fails.
2. Corrupted Network Drivers: Wireless card drivers can become corrupted during system updates, preventing virtual network creation.
3. Frequency Band Mismatch: Attempting to share or join a 5 GHz band on a wireless card that only supports 2.4 GHz causes connection rejection.
4. Disabled Virtual Adapters: The hidden virtual Wi-Fi adapter required to host networks may have been disabled automatically by power-saving modes.
5. Firewall & Security Interference: Aggressive third-party antivirus software often flags virtual hotspot routing as a security threat and silently blocks it.
6. Carrier Data Limits: If you are trying to connect to a phone, your mobile plan may block tethering or hit a high-speed data cap.

Quick checks first

Before digging into device managers, perform a few rapid sanity checks:

• Verify phone tethering status: Ensure your smartphone actually has cellular tethering enabled on your carrier plan and that mobile data is turned on.
• Toggle Airplane Mode: Turn Airplane Mode on for 10 seconds on both devices, then turn it off to re-initialize radios.
• Forget the Network: On your laptop, go to your Wi-Fi settings, select your phone's hotspot under Known Networks, and click Forget. Re-enter the password manually.
• Disable Battery Saver Mode: Laptops and phones often disable hotspot hosting dynamically to preserve battery life when unplugged.

When it's a real repair

If you have performed a complete network reset, reinstalled network drivers, and confirmed that other laptops can host or connect to hotspots without issue, you may be looking at a hardware fault. Hardware issues typically present as:

• The Wi-Fi card disappearing entirely from Device Manager (showing an Error Code 10 or Code 43).
• Wireless signal dropping to zero unless the laptop is placed directly next to the mobile phone.
• Total failure of both Bluetooth and Wi-Fi simultaneously (as these usually share the same M.2 card).

Internal antenna cables can snap or detach from the internal Wi-Fi card if the laptop was dropped, or the M.2 Wi-Fi card itself may have degraded over time due to heat.

DIY vs professional repair

Fixing hotspot software and driver issues is 100% DIY-friendly and takes less than 20 minutes using software tools. You do not need to disassemble your laptop for software, service, or driver adjustments. Check out our detailed repair /guides for step-by-step instructions on updating drivers and managing network configurations.

If your internal Wi-Fi card is physically damaged, replacing it is usually straightforward on standard Windows laptops. Opening the bottom chassis gives you direct access to the M.2 wireless card held by a single screw and two small antenna snaps. However, on ultra-thin laptops and MacBooks where the Wi-Fi module is soldered directly to the motherboard, a physical repair requires micro-soldering. If you are uncomfortable opening your chassis or dealing with tiny antenna clips, consider consulting an LML Experts technician or exploring mail-in assistance.

Next steps

1. Work through the ordered troubleshooting steps above, starting with frequency band changes and network resets.
2. Search our /problems database if you encounter specific Windows or macOS error codes during driver reinstalls.
3. Browse our community /reviews to find recommended replacement M.2 Wi-Fi cards if your internal hardware has failed.