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I just tried to reinstall my Ubuntu 12.04 System so I put in my live-CD (64bit) and did a reboot. Then my computer detects it and it wants to boot from it.

Shortly you can see two lines of text and then it stucks on a blackscreen. In the top left corner you can see a "command-line" courser. A courser as it can be seen in the virtual terminal of Ubuntu (Ctrl+Alt+F1).

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1 Answer 1

If you were originally able to boot from this live CD to install Ubuntu, then the CD may have become damaged and you should make a new CD/DVD or USB flash drive.

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I already tested 3 different CDs/DVDs. ;-) –  Drahnreb Jun 12 '12 at 17:59
    
Did you originally boot and install from an Ubuntu 12.04 LTS live CD/DVD? If not (for example, if you upgraded to 12.04 from a previous release), you should (1) MD5 test your .iso image and (2) try booting with the nomodeset boot option. –  Eliah Kagan Jun 12 '12 at 18:02
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