Hey Guys, A couple of weeks ago, I made a thread about an issue that i was having with my graphics cards; That the two would not run in crossfire properly. I am still having this issue. This was not a problem when I first had my PC assembled. For about a month after I had been noticing some small problems with games running - Occasionally, certain objects in games would flicker, for some reason, particularly green ones. Then, about two weeks ago, when I was running World of Warcraft, I started getting grayish colored artifacts. I reset my computer several times, but the problem persisted. It then got to the point where graphics in games would not even load properly, and the artifacting intensified. At this point, I suspected that it may be a driver issue; I updated my drivers and re-booted. When I then opened World of Warcraft again, it had gotten much worse and my graphics cards crashed and went into recovery mode. Ever since the cards crashed, the cards have not been running together properly. When i re-seat the cards, re-boot and run a Furmark test, it works fine and the results are as they should be. However, after the first or so test, although it says that the cards are running in crossfire, the results that I get when bench marking are that of which you would expect from a single card. I had tried everything i can possibly think of to resolve the issue: - Updating/Cleaning out drivers. - Re-seting both cards back to default. - Re-seating both cards (About half a dozen times) and changing their order. - Extensively testing both cards individually in Unigine heaven, Furmark, 3Dmark11 and some testing in World of Warcraft. (I saw no issues at all when they were tested individually). - Checking each RAM stick individually. - Resetting the overclock on my CPU. - Trying different AMD crossfire cables (About 3). - Using different power cables. Here is a picture of what was happening (I wasn't able to get a screen shot of the artifacting) When it got to the point where I felt as if I had tried everything i possibly could, I took my PC in to be looked at where i bought and had it assembled (PLE Computers, Perth). They had my PC for about a week, testing it. They said that they had tested both cards individually and together and that the results that they got were as they should be. In 3Dmark11, About 11000 individually and 19000 in crossfire. These results match what I was getting before the issue started occurring/ The technician at PLE had concluded that it was not a problem with the internals of the computer. He suggested that the issue may be occurring as a result of a problem with the power point in which my computer is plugged in. So I tested it at three different power points at opposite ends of my house and the issue continued to occur. At this point, I am clueless as to what i can do to resolve the issue, or even what the problem is. If anyone has any suggestions at all, I would greatly appreciate it. Thanks.