Black screen on fresh install

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http://askubuntu.com – I've been trying to install Ubuntu 12.10 on a laptop for a friend, but I can't seem to get it to display anything. In order to make the installer work, I had to run it in nomodeset mode, otherwise the screen was almost completely black. I could very dimly see the install screen, but barely. However, running ubuntu now that it's installed, I have the same extremely dim screen (however, I can see the screen for a split second if I kill the power). I have tried running it with the nomodeset option in grub, but that just led to a screen with nothing but garbage. The graphics card for the laptop is (HowTos)