Video Reference: Here

Make sure your device is plugged in. Enter normal BIOS with F2, then turn off your PC.

Press this combination while your PC is turned off from previous BIOS boot:

• FN once then press again and hold,
• While holding press:
• F4, 4, R, F, V
• F5, 5, T, G, B
• F6, 6, Y, H, N

Basically moving your index, middle and ring finger diagonally downward to the right starting from F4, F5, F6 down to V, B, N (taking it one line at a time)

Press the Power Button and hit F2. You should see Advanced Option after Main Option

🚨 BE VERY CAREFUL!

There is a reason why they made it as difficult as this. I just recovered from accidentally turning off my internal graphics without BIOS back flash activated. I couldn't see anything at Boot Time until an Operating System was loaded.

Make sure to take precautionary steps like activating BIOS Back Flash and PS2K keyboard and mouse so you can perform a BIOS reset with F2, F9, Enter and F10 or Back Flash with Windows should anything go wrong.

Else you maybe considering flashing the BIOS chip like I was 🥲