[ubuntu] wont boot after install

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http://ubuntuforums.org – hi, i am trying to install ubuntu server 12.04.1 and the installation seems to go fine. when the cd ejects and it reboots, i get the bios and then it goes black. i tried again and went into the boot menu and made sure it was trying to boot on the hard drive and it was. when i installed i used the entire disk, and i told to install the grub boot loader (not sure if thats the right name) when it asked. This is the 3rd time i've tried... This same computer did allow me to install ubuntu 9.04 server successfully. i am reading this post and i followed the directions to boot in recovery. (Hardware)