Installed W8 on D:\ partition,clean install and I done this mistake.Windows goes unactivated.Reinstall again correctly in C:\ with the same ISO and same key.ACTIVATED!
The comment of that posters looks like that the WMC will work only till January 31. 2013 which isn't true! Only while using the FREE WMC key, you need to activate 1. time before February 1. 2013 and could use after that date again and again for reinstallation.
this is true,the WMC keys that i gave to my friends have been used over and over again,first they used the josh cell activation backup tool,then they installed the backed up activation on different PC's,