[ubuntu] Bootable CD won't boot

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http://ubuntuforums.org – Some background here: http://ubuntuforums.org/showthread.p...12267344.:sad: I was going to install Mint, but the DVD wouldn't boot. So okay, I'll install Ubuntu. The live CD won't boot. I've checksummed the ISO file for ubuntu-12.04.1-desktop-amd64.iso. How do I go about figuring out what's wrong? Thanks! [system info] Microsoft Windows 7 Home Premium [sucks] Version 6.1.7601 Service Pack 1 Build 7601 System Manufacturer Dell Inc. System Model Studio XPS 9100 System Type x64-based PC Processor Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz, 2801 Mhz, 4 Core(s), 8 Lo (Hardware)