Please, I can't install Ubuntu and Kubuntu 13.10. When i click to test Operating system, my screen turn black in five seconds and my computer restart. (I tested all configurations in BIOS.) Asus z87m-plus, i5 4670K, 2x 4G Kingston 1600, Corsair Neutron 256, 2x ATI Radeon HD7850 out HDMI. Thanks, I read the solutions to fix the problem. I try with -nomodeset- the system restart. I try with all options UEFI off in BIOS, the system restart. I try with CSM compatibility ON, the system restart. I try with all GRUB options , acpi etc etc, the system restart, with secureboot OFF, system restart. I don't know to try it more. Please.