Windows 8 32bit stuck at "89% getting ready" help pls

Hi I am trying to upgrade my sons win 7 32 bit to windows 8 32 bit he had bought a few days ago.I have tried 5 times .All 5 times it installs fine and reboots and gets to the point where it says 89% getting ready it then reboots and crashes with a blue screen from windows 8 ,the new one.What could be the problem, I have tried no startup items,checked off hide microsoft services and disabled the rest.The mobo is a Asus P5LD2 .Any ideas.I am all up to date with windows also in win 7.Thks

Anyone?