[ubuntu] Black screen after click on "Install Ubuntu"

Hello all!

I have a black screen after a click on "Install Ubuntu"... I have already tried all experimets found here : http://askubuntu.com/questions/16207.../162076#162076

I am desperate... I have a MSI GE60-OND with Windows 8. I disabled SecureBoot,FastBoot...

Thank you in advance ;)