Korang pki yg RC (Release Candidate)=Prerelease sebelum yg Win 7 Final Retail RTM kuar.
Win 7 RC ni akan expired pada 1 June 2010, lepas dr tarikh tu win 7 tu trus tak leh pakai tak kira la camne skalipon korang crack dia tetap akan expired.
So, solution cari windows yg original a.k.a genuine, kalo tak leh jgk download win 7 yg yg final retail rtm build 7600 dan ke atas pastu cari la crack loader yg bagus.
Kalo yg Beta version nyer mmg da expired august 2009.
Ni offifial statement dari website mikosop...
Windows 7 RC
Windows 7 RC expiration
Effective June 1, 2010, Windows 7 RC will expire.
To continue using your computer, you should prepare to install the retail release version of Windows 7 or install an earlier version of Windows before the June 1, 2010 expiration date. You will be unable to upgrade from Windows 7 RC to the retail release version of Windows 7. However, you can back up or transfer your data to your next or previous operating system.
Windows 7 RC expiration functionality
Effective February 15, 2010, the expiration notification process begins:
Windows 7 RC users receive an expiration notification in the task bar one time per day.
Windows 7 RC users are presented with the Notification Wizard one time every four hours and then one time every hour.
Effective March 1, 2010, Windows 7 RC enters the next phase of expiration:
Expiration notifications in the task bar continue.
Computers that are running Windows 7 RC restart every two hours.
Important When the computer restarts, your work will not be saved.
Effective June 1, 2010, Windows 7 RC expires:
Windows starts to a black desktop.
Windows 7 RC users are presented with a Windows Activation screen. The screen states that the Windows that you are running is not genuine.
Computers that are running Windows 7 RC restart every two hours.
Ni link dia...
http://support.microsoft.com/kb/971767