Posts19532Registration dateWednesday October 8, 2008StatusContributorLast seenJune 15, 20191,834 May 2, 2010 at 03:18 PM
I suspect a hardware problem with either the monitor or the Video card in the PC.
I suggest you try the monitor with a different video source. If the problem remains then the monitor is at fault. If it's OK with a different computer then the 1st computers video card may be at fault.