Suddenly my audio has crackles and pops. Maybe a coincidence but it seemed to happen after the 10/29 patch Tuesday. I reinstalled the original audio drivers from HP's web site but that made no difference. I am using the digital output from my PC to a digital input on a stereo receiver. The noise is present at 44.1 and 48K, 16 and 24 bit, and regardless of the Realtek digital volume setting. It occurs to me that I installed Replay Video Capture 5 and Replay Media Suite 5 on 11/2, I wonder if that could be the problem, I have used earlier version successfully, I will uninstall them and see if that makes a difference while I wait for some kind souls to help me out. Thank you.