Installed Ubuntu 10.04 and was happy with how it was working. Then I tried to restart.... After restart, Ubuntu wouldn't start. It doesn't even get to the "ubuntu" loading screen with th e5 little dots that light up under the logo. The screen just goes black and, actually, looks like the power to the monitor is shut off. Finally got it to run off a live CD. I had to burn a new CD and burned it at super slow speed (only 4X) because the old CD wasn't working. I read somewhere that burning slower helps improve CD quality. Anyway, thanks to the live CD, I can post here, but I have no clue what to do next. THANKS!!