Hi guys,
A black horizontal lines appear when I’m using Blender 2.65 on Windows 8 in notebookHP dv6-6190br, with AMD VISION A8. It is very strange because everything works in the same notebook with Windows 7, seems to be a proplems with AMD Driver.
I did a video showing the problem:
http://www.youtube.com/watch?v=zzg5qjvrweE
If someone know how to fix it, please, help me!!!
The AMD Driver as whole is a problem 
Anyways, first guess you have some anti aliasing mode enabled… disable it.
Hi arexma, when I try to open the blender user preferences, it crash!! But I found a way! When I use the shortcut ctrl alt U, I can enter in the preferences. I fixed the black lines changing the window draw mode to FULL. But still whit a bad performace… I must change something in amd driver. Someone know how to fix that amd problem with the blender window draw modes?