At the BUILD2013 conference, Microsoft introduced a series of changes to Windows 8.1, but there were still some hidden changes that were not involved, such as simpler key-replacement methods.
In the current release, a user who wants to replace a product key is typically chosen to make changes in the activation area of "computer information," or to replace it with a related command character.
Metro Interface Change key
However, in Windows 8.1 This process will be very simple, users can simply enter "Slui" in "Run" to bring up the Product Key replacement window. In addition, the current Metro interface can also be replaced by the key, just in the beginning of the screen directly enter "Product Key" to open the relevant functions.
Windows 8.1 Preview has been released last week and interested users can upgrade through the Windows store or download an ISO image file installation.