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Possible Duplicate:
My computer boots to a black screen, what options do I have to fix it?

I installed Ubuntu 12.04, everything went fine during install, but when complete, every time I =boot up, I get a black screen. How do I correct the issue?

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marked as duplicate by Eliah Kagan, Ringtail, hhlp, Marco Ceppi Dec 24 '12 at 16:15

This question was marked as an exact duplicate of an existing question.

What kind of computer? – TardisGuy Oct 14 '12 at 4:38

I have had similar results but they were caused by me adding an additional hdd which changed the hdd configuration.

On boot-up at the grub menu try editing the boot entry. It sounds like you are trying to boot an incorrect partition.

try playing with different combinations of and try to remember which partition you made root!

root (hd0, 1)

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Please try:

---- If you are in a laptop you have a key of brightness adjustment (click on that to give more brightness)

-- add "nomodeset" to grub: See this link:

-- If its X that its not running and you have an ATI: X doesn't start after Upgrade from 11.10 to 12.04

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At the log in, click the icon right next to your name and a drop down box will appear.

Select Ubuntu 2D, and then continue to log in

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How do you know, He can reach at the login screen? He said, he get stuck in black screen, it is more probably at boot screen, in that case, you don't have a login screen. – Anwar Shah Aug 2 '12 at 5:59

Installer might installed grub on usb, try to boot from usb and then re-install GRUB, by running this command:

sudo grub-install /dev/sda
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