You can find out your system info for what build you have for Win8 by typing (msinfo32.exe) into the search box. Then click on the resulting msinfo32.exe & it will take you to system information for all you need to know about your computer OS build for Win8. I do not recommend using programs to tweek your operating system until you know what build you have and if it is compatible with your version. You might be installing a program to tweek your system that was designed for a final version or vice versa. Which could lead to computer problems. I saw your comment and decided to let you know if you haven't found out yet. Hope this helps!