4 Replies Latest reply: May 28, 2013 6:06 AM by Andrew_in_Wales
Whistlers Level 1 (0 points)

Hi - My brand new imac was suffering from a flickering screen when scrolling (fine in full screen mode, but seems to be a problem with lower half of display when not in full screen mode) so I have actually exchanged for a complete replacement - spent 3 hours migrating everything over, and seemed to be working fine - cannot believe it but it's now happening on this machine too...help?

iMac, OS X Mountain Lion (10.8.2)