Trying to re-install ubuntu 11.10on an HP Pavillion G6, screen goes black after the ubuntu logo shows.How do I get it to install normally?

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http://askubuntu.com – Installed Ubuntu 11.1 successfully without my wireless device being recognized. Used sudo apt-get update + upgrade commands to attempt to fix this. Computer crashes after upgrade and now it won't finish re-installing Ubuntu, after it shows the first purple screen with the Ubuntu logo, the screen goes black. Used the Derik's Boot Nuke CD and then attempted re-installment again, and the black screen problem remains consistent, seemingly no matter what I do. It sounds like it's installing but won't let me see anything or go anywhere. heelllppp (HowTos)