You're looking for a working driver for the Broadcom BCM430n WLAN adapter on a 32-bit Windows 7 system. Here are some steps and resources to help you find and install the correct driver:
Since Broadcom often provides its chips to major manufacturers like Lenovo, Dell, and HP, the most reliable way to get a "working" driver is through their official support portals.
Finding a working driver for the Broadcom BCM430N (often identified as the Broadcom 802.11n Network Adapter) on Windows 7 32-bit can be tricky since many official download pages are now archived.
, as Broadcom itself typically provides drivers only to hardware manufacturers. 1. Reliable Download Links