How to Install WiFi Driver in Windows 7 64 Bit

Listed below are three steps that you must follow in order to update your wireless adapter driver in Windows 7. Before proceeding, you must uninstall the older version. Then, you must update the firmware and update the driver. 
Follow these instructions to ensure that your wireless adapter is properly installed and working. If you experience any difficulty installing the driver, consult the manufacturers' instructions. After completing these steps, your wireless adapter will be ready to use.

Update Wireless Adapter's Driver

The first step in updating your wireless adapter's driver in Windows is to locate the device manager. Open this, and look for the wireless adapter you want to update. If the adapter is listed, but you do not have the driver, try searching for it online. 
The name of the device will be listed under the 'Others' category. If you're unsure of its name, it will appear under 'Network adapters' with a yellow exclamation mark.
Once you've found the wireless adapter you need to update, find its details in Device Manager. You should see a tab for the driver, and you can download it manually or from a USB drive. You will need to restart your PC after installing the new driver. 
Make sure you follow the instructions carefully and install the driver correctly. Don't use the wrong driver for your wireless adapter, as this will cause your Windows 7 system to crash.

Uninstall Older Drivers

If you're having trouble with your wifi card, you might want to uninstall the previous WiFi driver you installed before you install the new one. While Windows will keep the old driver version in case the new one causes problems, you can uninstall it and restore the previous version. Also, older drivers take up disk space and may not be used anymore. To delete the old version, you should run the Device Manager.
To disable automatic driver updates, you can use the "Show or Hide Updates" troubleshooter. You can also use the Device Manager, which will show you a list of drivers that are currently installed. Afterward, choose Disabled to disable the driver updates. 
If none of these methods work for you, try the Device Manager, which is located under Control Panel. After opening the Device Manager, locate the device you want to uninstall.
How-to-Install-Wifi-Driver-in-Windows-7

Update Wireless Adapter's Firmware

If your wireless adapter has not received a recent update, it may be time to download and install the latest version. To do this, you must first locate the correct adapter in your PC. Using the Device Manager, right-click the adapter and choose 'Update Driver Software
If the device doesn't have a driver software disc, you can also download and install the latest version from the manufacturer's website.
For help locating the correct driver software for your wireless adapter, use the help page link provided by the manufacturer. Some wireless adapters require the latest firmware or microcode. To find out if your adapter supports these updates, check the Wireless Adapter Chipset Directory. 
If your wireless network interface has not yet been installed, configure it by using the connection manager or Debian's network interface configuration file. If you do not have internet access, you can use your PC to locate the characters.

Intel WiFi Driver for Windows 7 (32-bit and 64-bit)