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today I installed Ubuntu 14.04 LTS on my old (x64) computer. I installed it from a live USB stick (created with unetbootin, FAT). After the sucessfull installation on the hard disk I rebooted the PC. The typical purple boot screen showed up but thats it. The fans are still running, the keyboard lights are on and the displays seem to have a signal since they dont't go to standby mode. All I say is two black screens.

Then I tried to start the live version from the stick - nothing happens. I mean really nothing happens. I click on the button at thats it. Dead end.

During the booting process there was a massage right before the purple screen. As far as I can remember it said something like:

no irq handler for vector 

repeated 5-7 times.
s3lph
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zergcheese
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2 Answers2

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try to do the following: - press this key combination simultaneously Ctrl+Alt+F2 - a regular command line screen will appear , type in your username and password as configured during install process - when the prompt turn to something like user@machine:~$ type this

sudo pkill X

beware that X is uppercase - then type 

sudo startx

if this didn't work comeback here :)

younes
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It could be graphics problem, or problem with Unity.

When your machine gets to that purple screen, try to press Ctrl+Alt+F2 and report if a terminal appears.

Zbunjeni
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