[ubuntu] Can't Boot Ubuntu

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http://ubuntuforums.org – I read this article for my Acer Aspire One 532h. I read a lot and I tweaked it, so I hope I didn't break more than what I think. I changed the rc file in /etc/init.d so my computer would boot faster, and I saw the warning about karmic, but I use 12.04, so I ignored it. So now my computer boots to the part where I select Ubuntu or Windows (I dual boot), and to recovery or regular, next I see "ubuntu" with the loading dots, and the screen goes black. I was able to get some software for Windows that would allow me to view my Ubuntu files, so I got the gedit backup and tried going into (Hardware)