Can`t access BIOS after Ubuntu 14.04 install

As there are no specific settings in your power management directory for Logitech keyboard and mouse, there is only one thing you can do: turn off all power management settings instead of just the power management settings for Logitech!

1. Go to your BIOS and turn off all power management settings
2. Press Ctrl+Alt+T to go to a terminal and type:

   gsettings set org.gnome.settings-daemon.plugins.power active false 

Now it should work from much further away...

I typed the command in terminal and it worked for like, 3-4 hours, and now it don`t work.

Do anyone here know how I can access BIOS and disable fast boot?
The startup comes with a black screen, some weird letters "Like some of a sci-fi movie" and the Ubuntu tty2 terminal. And then it boots up. This is a very annoying problem, so if any one know how I can fix the Logitech problem or/and help me disable fast boot and access BIOS I`ll be very very happy.