Bi-Hourly Shutdowns of Windows 7 Beta to Begin
Neowin reports that Windows 7 beta users who are still on build 7000 will start to experience bi-hourly shutdowns on July 1, 2009. The shutdowns are Microsoft’s mechanism to remind users to upgrade to build 7100. On August 1st, all betas will expire, and begin to show the “Windows not Genuine” message.
You can avoid this issue by downloading the public release candidate of Windows 7, which will be available until August 15, 2009.