That's the 3rd workstation with win7 64bit i see going nuts over the display driver. Had problems with nVidia and ATI cards, with MS or provider's drivers. Do you guys noticed this?
Going nuts in this case is sometimes system hangs, sometimes display flickers and becomes unreadable, sometimes i get system error messages, and sometimes bsod.
The only workaround i found for now is for an ATI card for instance, to install the Catalyst software with the latest driver, reboot, then try to ignore all the errors i get and rollback driver ( in device manager ) then update driver in device manager through internet!!
Great job Windows 7...

Jaime