I just got my new laptop, a lenovo ideapad u430, but I can't install ubuntu. I'm not a complete noob, I've installed ubuntu in other computers before, but this one is giving me problems. I got it to boot from the usb but the first installation screen is barely visible, very, very dark, and nothing seems to work. If I press enter when the orange screen with the small keyboard logo appears, it gives me a menu to either install or use ubuntu, but if I choose any of the options it tries to start and then just freezes and the screen is either black or show some logs of what it was doing. Please help, I don't want to have to use windows!