I downloaded the desktop version of Ubuntu 12.10 32-bit and installed it in my computer with the "Universal Usb Installer". I restarted the computer and the computer automaticaly ran the Ubuntu Instalation. I set it to install alongside Windows 7. I was planning to leave 80GB for Windows and 170GB for Ubuntu. After I set everything, I cliked to install and then came my problem. It wouldn't install. It was taking an awful lot of time so I saw there was an error message (I don't know what exactly) appearing on the instalation screen. I had to abruptly stop the whole operation because there wasn't a button to cancel! My Windows seems to be fine and I'm not having any problems with it. And you probably should know that there are no more than 10GBs of files and software on my computer.
P.S.: Sorry, if it was hard to understand. I don't really know much about computer and I'm new to Ubuntu and obviously English isn't my first language!