[ubuntu] Ubuntu 11.10 won't install. Black screen

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http://ubuntuforums.org – I have been trying to install Ubuntu 11.10 on my new Lenovo laptop. The specs are CPU - AMD A-8 3500M GPU - AMD Radeon HD 6620G 4gb RAM Currently on WIndows 7 64 bit (YUCK) So I put the 32bit Ubuntu 11.10 onto a cd-r, and booted it. I got to the menu screen and hit Install. Screen eventually turned off, so I looked around on the internet and found I have to use the nomodeset option. I did, and it worked. Ubuntu installed and then it said something like "Installation successful, you must reboot now". So I did and the screen went to the grub menu. I hit the first option and (Hardware)