I have an aging XPS-420 running Vista. Periodically, but not very often, I lose the audio, but not the video, of whatever I am looking at. This can happen to news articles with sound and music live off of YouTube or what I have downloaded off of there. I have not had it happen when I am listening to online radio (yet). A restart seems to clear it up. Any idea what might be causing it, and is there anything I can check? I have made sure my volume levels are up.
The sound was fine yesterday for most of the day. Late in the evening it went off, but was restored by doing a restart. Any idea what might be causing this intermittent problem and how to fix it.