OS: XP Sp1 The problem i am facing nowadays in deframenting, is tht the Unmovable windows files(Green in color) is getting shifted! I mean theses files are at the start of the "Graph" but when i analyse it gets shifted two the middle of the graph! Is these sum kind of file corruption? No errors yet! NOTE: Already Formatted the HD, same thing happens after two-three re-starts ! Can it be power supply probz?