If the standard .exe installer fails (which it often does), follow this process. This is the most reliable method for the BCM43142A0.
The BCM43142A0 is a combo chip. When the driver is missing, you will likely lose Bluetooth functionality first, though your Wi-Fi may also become unstable or drop connection frequently. Because Broadcom does not provide drivers directly to consumers, you must rely on Lenovo’s official support or the Microsoft Update Catalog to restore service. bcm43142a0 driver windows 10 lenovo