HP Pavilion 15-p142nl Unlock Bios Options

Hi guys! I've been trying to solve a problem since yesterday, but I wasn't able resolve it, so I'm posting here to ask for your help.

I would like to unlock the bios of my notebook because I want to be able to switch on/off the option "switchable graphics" and/or "ATI crossfire", which I can't see anywhere in my bios menu.

The problem I have is that I can't get my dedicated graphics card to run, so every application runs on the integrated graphics card. I've installed Speccy, TechPowerUp GPU-Z and AMD System Monitor. All of them confirmed that the dedicated graphics card is there but it's not being used (it shows 0% utilization and 0Mhz of frequence). Both my graphics cards are ATI crossfire capable, but ATI Crossfire is disabled, and I can't find a way to enable it through bios or any other way.

I've already tried installing the updated bios versione that HP provides on their website, but I still can't see the option to enable crossfire in the bios, so I'm thinking that maybe HP is hiding some options. Can somebody help me unlock the bios, please?

These are my specs:

CPU: AMD A10-5745M APU with Radeon HD Graphics

RAM: 12Gb

MOTHERBOARD
Manufacturer: Hewlett-Packard
Model: 22C6 (P0)
Version: 0975110000405F00000620180
Chipset Vendor: AMD
Chipset Model: K15 IMC
Chipset Revision: 00
Southbridge Vendor: AMD
Southbridge Model: A76M FCH
Southbridge Revision: 2.6

BIOS
Brand: American Megatrends Inc.
Version: F.33
Date: 21/11/2014

INTEGRATED GRAPHICS CARD
ATI AMD Radeon HD 8610G

DEDICATED GRAPHICS CARD
ATI AMD Radeon R7 M260

If you need anything else let me know