12.04 kernel panic

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http://askubuntu.com – Hello i am having trouble with ubuntu 12.04. i made an iso cd and try to install the ubuntu operating system but but then i get this message Kernel panic-not syncing Attempted to kill init! pid:1,comm:init not tainted 3.2.0-23-generic-pae#36-ubunru then it says switching to console text and then it just hangs in there and nothing happens i burned another cd with ubuntu 10.04 but i get another problem ubuntu just stays there in the splash screen with the 5 dots which move from red to white but nothing happens i was able to boot before with 10.04 but i recently up graded my computer graphics (HowTos)