I have an Asus VivoTab Smart ME400CL with Windows 8 Single Language preloaded. Previously I did purchase Windows 8 Pro product key thru Microsoft Online Store. I downloaded it,enter the correct Windows 8 Pro product key as per invoice and make a bootable USB Drive.Right now I wish to clean install Windows 8 Pro on the tablet. I boot into UEFI and change first boot to USB Drive. I manage to load till Windows Installation language then click Next, then click Install now. The page will appear Setup is starting. After several second, a windows popup message "The product key entered does not match any of the Windows image available for installation. Enter a different product key." When I click OK it will go back to Install now page. Seems that I cant continue with the setup. I suspect the Windows 8 Pro USB Drive product key is not match with the Asus OEM Windows product key. So what can I do now to proceed with the Windows 8 Pro installation?

may i know how can i resolve wifi connection problem?

http://www.asus.com/my/support/Service-Center/Malaysia