Using the Lenovo System Update Tool | Technical Support Services
There Might Be a Problem with the Driver for WiFi Adapter ✓
Lenovo ThinkPad L520 Laptop Wireless LAN Driver Download
Yellow exclamation error is displayed in Device Manager when ThinkPad USB-C Dock is connected to a Microsoft Windows 7 system - ThinkPad - Lenovo Support US
Frequent drops or intermittent wireless connection - Windows 7, 8, & 10 - Lenovo Support US
Trouble connecting to the internet or a wireless network - Lenovo Support US
How to Reinstall a Wireless Network Adapter Driver in Windows (2022) - YouTube