If you have the driver installed but the signal is terrible, the driver might be outdated or the power management settings are too aggressive.
Hardware manufacturers eventually stop supporting old OSs. wifi driver in windows 7
If you still have the original box or motherboard CD/DVD that came with your computer or hardware, it likely contains the Windows 7 Wi-Fi driver. Insert the disc and run the "Setup" or "Install" program. If you have the driver installed but the
: Click the arrow next to Network adapters to see your wireless card's manufacturer (e.g., Intel, Realtek, Broadcom) and model number. 2. How to Install a WiFi Driver in Windows 7 wifi driver in windows 7