Networking – HP ENVY X360 wireless/airplane mode button does not light up

It seems the "wireless communication switch" on some models is implemented as a software switch. Check to see if there is a wireless switch option in the installed HWSetup utility. If not, look for TBSWireless:

1. Navigate to C:-->Program Files-->Toshiba-->TBS
2. Double Click TBSWireless

On this model laptop (among others) the wireless switch and power button are integrated into a shared circuit board which is connected to the mother board via a small white ribbon cable in the laptop, so it makes sense that both the power button and wireless are exhibiting signs of failure if there is a problem with this circuit board. If the circuit board has failed it needs to be replaced. There are instructions online for how to replace it, including this youtube video.

In my particular case I noticed that depending on how I held the laptop (or if I jiggled it) occasionally the wireless card would start working again. This told me I probably had a loose cable. Sure enough, I opened up the laptop keyboard and noticed that the white ribbon was loose. I snuggly reinserted the white ribbon cable into its slot on the motherboard and 'clipped' it back into place, and voila, problem solved. The power button and wireless switch are now working perfectly.