If you don't know the manufacturer, download DriverIdentifier to find the specific vendor and hardware ID.
Follow the on-screen prompts provided by the installation wizard. Restart your computer once the process finishes. Method 2: Manual Installation via Device Manager 80211n wlan driver windows 7 32 bit exclusive
Restart your computer once the installation completes to activate the new driver. Troubleshooting Tips Broadcom Wireless Driver for Windows 7 (32-bit and 64-bit) 5 Mar 2020 — If you don't know the manufacturer