Hardware key location

Sep 5, 2018
I asked how to turn on the Bluetooth on my toshiba satellite C50-B 64 bit, Windows 8.1 operating system and the first step was to turn bluetooth on by using the hardware key on my computer. Step 2 open control panel, etc...but i need to know exactly how to complete step 1 first and the hardware key is eluding me !! Please help, im desparate !!