I started installing Ubuntu 12.04 on my Gateway laptop, to replace windows 7 that already was on it. Sometime during the installation the computer shut down due to my niece pressing the power button, because she thought I left it on and forgot. I'm guessing it got as far as deleting windows before the shutdown. Now it boots up, shows the Gateway startup screen then goes blank except for the cursor in the upper left corner. I can't seem to get the cd to load, I hear it run but nothing else, and I can't figure out how to have it boot from the cd as I just got this thing.
Obliviously I messed up the program files badly, how do I fix it correctly? Is there another version of ubuntu I can install that will fix this and turn this back into a working laptop instead of a brick?
I'd appreciate your help. Thanks.