Monitor flickering with GTX 470 SLI

[rick4937]

My 30" monitor occassionally flickers horizontal lines in low resolutions, and flickers on and off and is unusable at higher resolutions. This is true both in games and the desktop. Any ideas?

 

[rick4937]

Monitor is a LG W3000-BN, drivers are up to date, cables appear to be connected properly. Computer and monitor are brand new.