Microsoft released "Windows 8 Consumer preview".Which is a preview of the Microsoft's next version of Operating system after "windows 7".
Download Windows 8 from here ( If you haven't done-it is totally free )
This version of Windows has targeted mainly on mobile computing and it will be very handy in Laptops,Tabs and Smart-phones in future.
There is a watermark on the desktop after instaling the Windows 8 Consumer Preview.Which can be seen on the right bottom of the Windows 8 desktop.
I am giving you a small software, which removes the watermark very easily.You may not need any advance computer knowledge.Just download the software and run it.
Here is the link to download ,
Click here to download(556kB)
Run this software. you may see a interface like this.
Tick "remove all watermarks" at the top and click on Apply new settings.Wait few time until this finishes the operation.
Here you go..Enjoy windows 8