First of im running on a ibm t42 labtop, it only has a ati mobility 7500 not the best expecially for this, but i did have the same version of proE with the same drivers and it worked fine (did slow down with larger assembleys) however my wife got a virus on my computer and i had to format it 
Now sometimes when proE opens an internal window part of the background apear over top of it or random black spots apear on screen ( new part assimbly..so on window doesn't cause problembs nor does the damon plane selector for sketch, but any refrences window inside of sketcher has problembs....havnt got into the program much to see what other windows causes problembs)
whenever i move my mouse over buttons that have black over them they come back...(2nd pic)
View attachment 2712
View attachment 2713
Now sometimes when proE opens an internal window part of the background apear over top of it or random black spots apear on screen ( new part assimbly..so on window doesn't cause problembs nor does the damon plane selector for sketch, but any refrences window inside of sketcher has problembs....havnt got into the program much to see what other windows causes problembs)
whenever i move my mouse over buttons that have black over them they come back...(2nd pic)
View attachment 2712
View attachment 2713