Windows 7 evaluation copy build 7100 is for testing purposes. Windows 7 RC will expire June 1, 2010, and the bi-hourly shutdowns will begin on March 1, 2010. You can not upgrade unless you have a previous operating system installed, other than "windows 7 evaluation copy". Otherwise you need to buy retail version.
i phurcahsed win 7 ultimate and installed it months ago why is it now telling me im about to be shut down?it shows it is genuine, is there some way i canget this fixed withiut having to install agin as i have many programs and i dont want to have to reload everything?