flickering cursor

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    Windows 8 Login screen is black.

    Hi, i just updated my Windows 8.1 when I restarted my PC. When I was going to login, it was just a black screen. If you are in the login screen, the selected language in the right left corner and the internet connection in the left corner. Both of those two signs are flickering in the corners...
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    Windows 7 After installing windows 7 screen goes black and i cant do anything!

    Hey! I've just installed windows 7 from dvd over windows xp.Installation is went fine and realy quick but on the last restart and first starting up of windows 7 screen become black and i cant do anything.The only thing that i see on the screen is flickering bios cursor and only command that...