2 Hold down F8 key to enter safemode menu. To automatically avoid activation loop: (since activation is no longer available) After trial period runs out (for new install), When notifified that activation is neccessary to access windows XP: 1 Restart computer. In Windows 7, WGA is renamed Windows Activation Technology. Windows Genuine Advantage (WGA) is an anti-piracy system created by Microsoft that enforces online validation of the licensing of several recent Microsoft Windows operating systems when accessing several services, such as Windows Update, and downloading Windows components from the Microsoft Download Center. If a box appears saying 'Windows is already activated,' it means your Windows XP is genuine. The procedure enforces compliance with the programs end-user license agreement by transmitting information. Type the following command in Run without quotation marks: 'oobe/msoobe /a'. Microsoft Product Activation is a DRM technology used by Microsoft Corporation in several of its computer software programs, most notably its Windows operating system and its Office productivity suite. Check whether your Windows XP is genuine (optional). Enter your genuine key in the New Key box and click on Update.