Hi guys, I need help here regarding activation problem with Windows 8. Firstly, this is how thing goes. Recently, I bought a "Windows 8 Pro Media Center Pack" from local store and.. this was a big mistake. When I got back home, I try to clean install Windows 8 for my new RIG, I found out WMC pack was only for adding feature and not for installing Windows 8 Pro.. dumb me. Trying hard to find solution in this forum, searching high and low for fix, I came across this thread called " Creating a Windows 8 AIO with Media Center manually". The part I did was "Create a Windows 8 Pro with media center iso only". Using my friends computer to do it, I got stuck in the part which need to do something with "Data.dat". I don't really understand what it wrote there. "Keeping the image mounted and viewing hidden files and folders take ownership of the data.dat file and then delete it in C:\win8\mount\Windows\System32\spp\store\data.dat and replace with data.dat". After taking some time to think what does it mean, I finally came an idea of doing something that may not be right.. This is what I did. 1. Delete data.dat in C:\win8\mount\Windows\System32\spp\store\data.dat 2. Copy my friend computer "data.dat" in his system and place into C:\win8\mount\Windows\System32\spp\store. (Copy ownership? This is what I think it mean.) After everything was done, burn into DVD, I manage to get everything work but.. the activation just can't get it work. Try to run cmd with admin and type slmgr /rearm, i got this message. Error: 0xC004FE00 On a computer running Microsoft Windows non-core edition, run 'slui.exe 0x2a 0xC004FE00' to display the error text. Try other method like Enter New Key still doesn't work. Check the media boot install still no go. Buy Windows 8 said can't do it in current region. Please help. ---- After searching internet about "data.dat" and little understanding of this file, here is some of the info of my friend laptop. OS:Windows 8 Pro BIT: 64 Other MS product: MS office 2010 with EZ-activation. " Office 2010 Toolkit "