does Amd_dc_opt dot exe come in preinstalled? i found this exe in ccleaner startup. i dont recognize and i dont believe i download it. just trying to figure out what cause my computer to lock up. it might be this exe but i need more info. http://www.file.net/process/amd_dc_opt.exe.html if it came preinstalle dthen its clean. if its not then might be virus in disguise? if its legit... is this thing important?