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I've finally got ubuntu 12.04 installed as a dual boot but am having trouble getting it to start. I get to the GRUB screen and select ubuntu but it just goes to a black screen. The only thing I can do from here is to press ctrl+alt+del to re-boot it, but just keeps happening over and over. it also happens if I pick windows or ubuntu recovery mode. Any idea how to fix it? TIA

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What method did you use to install Ubuntu? – BiggJJ Jun 28 '13 at 9:00
I just ran it off a USB and installed it like that, using the 'alongside windows' option and just followed the prompts – lexic Jun 30 '13 at 6:38

Boot into a live CD and run this code:

sudo apt-get install boot-repair
sudo boot-repair

Choose the recommended repair and follow the instructions you are given. Once boot-repair is done, reboot and see if Ubuntu starts correctly.

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I tried this but it says "unable to locate package boot-repair" – lexic Jun 30 '13 at 6:28
I tried to boot repair using this: (2nd option) and it said it worked, but i've rebooted and it hasnt. the link it gave me was – lexic Jun 30 '13 at 6:54

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