Mark typed in his password, hit enter, and watched the spinning circle. Connected.
Broadcom Wireless LAN Driver (802.11a/b/g ... - Lenovo Support
Once you've downloaded the driver, follow these steps to install it:
The Broadcom 802.11n Network Adapter driver for Windows 7 (64-bit) serves as the critical communication bridge between Broadcom’s wireless hardware and the Microsoft operating system. This specific driver ensures that devices using the 802.11n standard can achieve high-speed wireless connectivity, improved range, and compatibility with WPA2 security protocols required for modern networks Driver Architecture and Compatibility
: A widely compatible version released in late 2014 for Windows 7, 8.1, and 10.