how to reset the bios in the hardware Lenovo Y560?

[Narkis5063]

So it was that after reinstalling Windows is longer included the purchase card , and the software installed, but the map was defined in the Device Manager as a standard VGA adapter. And accordingly , the computer is the built-in map.
In the BIOS have been activated on a discrete card , resulting in the display goes off completely. Laptop working, working windows, but the screen is black.
prompt!
How to hard reset the BIOS on this laptop? Jumper for example extract or short-circuit what ....