Black screen on ANY Linux installation or startup

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http://askubuntu.com – My problem is quite a usual one for Linux users - black screen. It occurs in the very beginning of the installation process (right after the very first loading of Linux kernel), or after the welcome screen when I try to run a Linux from Live CD or USB. Actually, first it shows tons of thin vertical bars of white, yellow, purple, etc. and then slowly dims to some ugly dark grey color. And the machine doesn't react on anything until I reset it with a hardware button. The thing is, that this problem emerges with every Linux distro I tried (latest OpenSUSE, Ubuntu, Kubuntu, Fedora, Mint, all with (HowTos)