Since Broadcom generally does not provide direct consumer downloads, you should use official manufacturer repositories or the Microsoft Update Catalog.
Below is a comprehensive guide to finding, downloading, and installing the necessary drivers to get your wireless connection back up and running. 1. Where to Download the Driver
Even if you don't have a Lenovo PC, their Broadcom Bluetooth Driver for Windows 10 (64-bit) often works for BCM94313HMGB cards due to shared hardware IDs.
If the driver doesn't install automatically after downloading, follow these manual steps to force Windows to recognize the card: Solved: Broadcom 4313 driver for windows 10 - HP Community
Dell offers a specific driver (v.5.60.48.35, A00) for the BCM4313 WLAN card that is compatible with older Windows 10 builds. 2. Step-by-Step Installation Guide