Hi, for the past one week my PC is working slow and there is stuttering in audio/video files like mp3, avi etc, I did every possible thing like reinstalling my realtek audio driver, video driver, scanning my entire PC, running tweaking, but nothing worked, still stuttering is there like before. I don't know what is the problem whether I should reinstall the OS or is this any hardware problem, like processor. Please help..... my email id is