This driver allows you to use the physical button's functionality to turn on or off the radio services like WiFi or Bluetooth. If you have another way of doing this, then you can ignore the installation. However, Windows Update is known to provide driver updates for things that work. I wouldn't recommend installing it. Instead use the CD or the downloads from the manufacturer's page to download the correct driver.
Input the model on the following page and then download the necessary driver for your device: http://www8.hp.com/us/en/support.html