20Jun/100
Removing activation in Windows 7
Faced this problem few days ago, when one update ruined my Windows activation for some reason, and i needed to activate.
A very simple solution i have found on Youtube. Download this application: RemoveWAT (1,29mb) and just hit Remove WAT - it took me 20 seconds of HDD work, after that explorer restarted. Then you reboot, and wohoo no activation present at all.