I have an HP ZBook 15 laptop. When I first got it, it came with Windows 7 preinstalled. I reformatted the hard drive and installed Windows 8.1. 

![enter image description here](https://i.stack.imgur.com/zfean.jpg)

There is a mute button and a wireless button on the laptop. They each have LEDs inside that can be either white or orange. Before I installed Windows 8.1, the LEDs would turn orange when I pressed the buttons. Now that I've reformatted and installed Windows, the buttons stay white. They still work (mute button turns the volume to 0 and the wireless button puts the laptop into airplane mode), but the LED just isn't changing color. I installed some drivers including "HP Hotkey Support" and "HP Wireless Button Driver" but they didn't fix it. Does anyone know how I can fix this problem with my laptop?