Everytime I close a page from video-sahring websites (Youtube, Dailymotion, etc.) after watching a video, my screen shows horizontal dark thin lines that disappear instantly, but the effect is very unpleasant.
The problem occurs in IE and Firefox. No problems in video players (WMP, VLC, etc.)
Is there any configuration I can change? Or is this a hardware problem?
Intel i5 3550, MB Gigabyte GA-H77-DS3H, 16GB RAM, Video Card AMD Radeon HD 6670 2Gb, Windows 7 Ultimate x64, Catalyst 12.10