Windows 7 Build 7100: Blank screen

[JRela2000]

About 10 seconds after arriving into the desktop, screen either goes black or white and stays that way. I'm hoping something is wrong because I believe the going blank thing wasn't supposed to be happening until next year or at least after the official release. Please help, I have work to do and I'm plaining to purchase when it officially comes out....

 

[kemical]

Try starting in 'Safe mode'.. If you can get it to start up and into windows, it's most likely a graphic driver problem.