Hello everyone, been about a month since I completed my first build, now I'm ready to OC. Here's my rig: Intel 'Bad Axe' Mobo (latest revision), Conroe e6400, 2x1 Mb Corsair XMS2 w/heat spreader, and (of course) Sapphire x1900xtx Video Card. I Downloaded the latest ATITool and the latest drivers for my x1900xtx. -Problem: Everytime I select the "Find Max Core" button in ATItool, my screen goes black and I have to reset my Computer. I read this in the "known issues" from ATITool website: "Why does my screen freak out and/or turn black all of a sudden? You have more than likely set your Core/Mem settings too high. To fix this all you have to do is just restart the computer (in some cases turn off) and it should be running fine again." But I don't thnink this applies to me, because I haven't changed any of the default settings--all I do is hit "Find Max Core" and my screen freaks out (once it turned white). I have also made sure that the "Temporal Anti-Aliasing" is turned off in the Catalyst Control Center. Any Suggestions?