ATC

I have the windows 7 rc1 64bit. Every time my comp sleeps or is shutdown, upon restarting, it freezes after a few minutes and i get a blue error screen. I've fixed the sleep problem by reconfiguring my power saving options. But my pc still freezes upon powering back on after a legit shutdown. Once I've rebooted after the error screen, my pc is fine and will never freeze until shutdown again. Any solutions out there? Austin