I bought a samsung bw227 and it worked fine on my brother's windows computer as an external monitor but when I try to use it on my MBP 13 (2011), it has a bunch of vertical lines all over the screen. They are spaced evenly and start from the left all the way to the right of the screen. They a greenish-white hue and it seems to go away on only ONE setting which is 1300X something at 85 refresh rate but the screen starts to flicker and shake. The screen and colors arent very good and the colors look washed out. But overall i dont know what the problem is. Any ideas?