To find the manufacturer of your wireless adapter and update drivers:

1. Open Device Manager in the Start Menu


2. Expand Network adapters. Right click your wireless network adapter, then click Update Driver.


3. Search automatically for drivers


4. Reboot your PC after installing the updated drivers.

NOTE:
You can also download the drivers of wireless network on the manufacturer’s website. Most manufacturers will have support pages where you can download files for your drivers as needed.

Links to some of the most popular Windows drivers:
Intel: http://www.intel.com/p/en_US/support/detect/
Realtek: https://www.realtek.com/en/
Qualcomm / Atheros: https://www.ath-drivers.eu/atheros-wireless-drivers.html