Unable to use preinstalled windows 8 apps

Hi I was wondering if some one could help.
I just recently installed windows 8 on my pc to check it out. all apps on the start menu do not work apart from IE.
Their title screen loads but then goes to a blank green screen.

I have updated my graphics driver running an ATI 5770. Im stuck any help would be helpful.

Thnaks

Try Reset W8, follow this tutorial: http://www.eightforums.com/tutorials/2302-reset-windows-8-a.html
Hope this helps.