Cannot boot Ubuntu anymore

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http://ubuntuforums.org – I have an Asus laptop that came with Windows 8 installed on it. I bought it about a year ago, and installed Ubuntu on it, in addition to Windows, and have been ahppily using it since then. A coupl;e of weeks agao, I did an apt-get dist-upgrade, and a bunch of stuff was updated. Shortly after that I changed the physical location of the machine, and neeeded to change the networking settings. I edited /etc/network/intrfaces, and tried to do a "service restart networking". I lost X, and could not get to a TTY, so I hard shut the machine down with the power switch. After that, i could no (Hardware)