I have a Dell OptiPlex 755. When watching online videos, intermitently, the sound will start skipping like a broken record. When that happens, the video gets stuck. I can only close IE 8 (happens with Google Chrome, too) but the sound keeps skipping. I can't shut the machine down properly. I am forced to do a hard shutdown.
I have uninstalled and reinstalled flash, updated the video and audio drivers but no joy.
Have all of the latest updates and ran Malwarebytes and Combofix.
I am running WinXP SP3