Originally posted by cb8rwh have you got the latest drivers for your video card? sounds obvious but might work? this is definately not a video card driver problem... Whenever I am in shaded mode, some faces seem to go black. I have attached an image to show you guys what I mean how can this be a NURBS model and u have "faces" that turn black. this is a common thing in polygonal modeling. usually set normals to face or like mike said set vertex normals solves that problem. i really doubt videocard drivers has anything to do with this....