Choose "Browse my computer for driver software."
This is critical. Searching for old drivers often leads to malicious "driver updater" scams. Do not download from driver-fixer.com , driverguide.com , or any pop-up ad. broadcom 802.11n network adapter driver windows 7 64 bit 11
Restart your PC. This forces the driver to use a simpler TCP stack that version 11 understands. Choose "Browse my computer for driver software
Right-click Computer on your desktop or Start menu, select Manage , and then click Device Manager on the left. Restart your PC
Driver version numbers are not arbitrary. Version 11 (often labeled as 5.100.235.11 or similar, depending on the OEM) is considered a "golden build" for Broadcom 802.11n adapters on Windows 7 64-bit. Here is why:
Leave your exact hardware ID (found in Device Manager > Details > Hardware Ids) in the comments below. For immediate troubleshooting, check your Windows 7 copy is updated to Service Pack 1 (SP1)—without SP1, even Version 11 will not function correctly.