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HP Compaq Nvidia Geforce 5500 2.5 Gb RAM 2.1Ghz.
I'm installing Ubuntu 13.04 for the first time. After install Ubuntu asks to reboot the computer to complete installation. The PC then hangs when it gets to the PC boot screen. Just a black screen. I've tried to restart and turning the PC off. When it boots, I get same thing, a black screen.