Preview of the Windows 8

Recently Microsoft had launched its upcoming windows i.e Windows 8 in Developer Preview format.When I tried it,it works fine until some boots but then the desktop goes black and no icon was seen it was like it crashed.
                 I have to again format my HDD and re-install the Windows 7 ultimate.So all the readers who are willing to install Developers Preview version of Windows PLEASE set it up carefully and backup all of your important data.



 pictures from www.microsoft.com
                                                                                                                 -Kiran Shrestha