Hi, I recently bought a HD 5570 1GB from PowerColor in order to put it in my new media center. I formatted my computer and put Windows 7 x64 on it. After installing the catalyst drivers, i ran into random crashes that occured while watching movies, surfing on internet or just having some random program running that doesnt use the GPU. When i tried to watch some movies some player using my GPU, no problem at all during the whole movie. Ive seen many threads relating voltage problem in 2D mode. Could it be the same ?