[ubuntu] Black screen while choosing an installation option

Hi everybody, first, sorry for my english, I am not from an english speaking country .. :/

Well, I have a problem and I hope, you can help me
I have a new computer without OS and I want to put on it Ubuntu witch I put in a bootable USB
i chose my computer to boot on the USB
and there I can choose : "try without installing...
install
OEM
and something else"
but, whatever the option i choose, the screen become black and nothing happen.

sorry for the english