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I installed the V4800 in my computer. It has Windows 8.1 Pro, Xean E31230 @ 3.2 GHz and 16 GB ram. The screen looks great most of the time. Every now and then I get these horizontal lines, seems like flashy pixels really but in a row maybe 1-2 inch wide. I have the latest updates for the card so not sure why this is happening. I was going to replace cable (a dual link DVI is already in place) but I noticed that I can make the lines going away by just altering the setting within AMD FirePro Control Center. If I switch (either on or off) the Alternate DVI operational mode, the lines go away for a period of time. They do come back though.
Has anyone had similar issues or some advice? Thank you in advance!