Ubuntu 12.04 gets stuck at Preparing to install Ubuntu

view story

http://askubuntu.com – Hi I have never had this problem before and have installed Ubuntu many times. I am trying to install Ubuntu 12.04 on my main system alongside Windows. The furthest I can get is the part where you can check boxes to Download updates while installing and Install this third party software. I thought it may be something to do with the Ubuntu partition I had installed, so I backed it up and then formatted that partition, that did not work. I think its having a problem detecting my drives I am not usre thats why I am asking here. (HowTos)