Screen black after waking up from hibernation

Hey all,

I have a problem since I installed Win7 on my laptop. Whenever the laptop automatically goes to sleep or hibernation mode while the lid is closed, it wakes up with the screen black. The only thing I figured out to do is switching it off and starting it newly then.
I already updated my graphics driver (ATI Radeon X1200 Series). Maybe there's a problem there because the Catalyst Control Center which is apparently supposed to configure the graphics does not work together with the most current driver. But except for the black screen I never had a problem with that.
I'd appreciate any suggestions to solve that problem!

You need to change what the computer does when you close the lid (in control panel)