Since the release of Windows 8 Consumer Preview, I have been lurking around in different forums so that I may get familiar with the types of problems people are getting and look for the solutions. One problem that people are getting is that they are not able to install Windows 8 Consumer Preview or Windows 8 beta with the default activation key provided at the launch event. The activation key provided at the launch of Windows 8 was:
Product Key: DNJXJ-7XBW8-2378T-X22TX-BKG7J
This product key works for activating Windows 8 for any language. If you are unable to use this product key, you can try out another alternative key which is also working for all language installations of Windows 8.
If you are still having problems, please let me know through the comments below.