Stange error need help!

[Disco Boy]

Every time I try to run UE the screen goes through like 4 shades of gray and than boots me back to desktop (with UE still running in taskbar). About 2\3 of the screen remains black and i get the following error (in a window called FATAL which is also in the taskbar).

GL_d3d_5:ZBuffer attach failed 87

Has anyone encountered this or a similar error or have any idea what the problem is or how to fix it?

 

[Starkey]

Try changing the video settings to software or Direct3d

 

[cff]

GL_d3d would hint for me that it is already at d3d.
My suggestion would be to try to run it at 640x480 disabling all new eye candy like 32bit mode (I think that one could be the culprint).