RE: Dell Inspiron 11 (3147, Mid 2014) makes crackling sound whenever sound is played
It crackles all the time, battery or plugged in. I had lots of documents to work on the first few weeks and I only noticed the crackling with windows "dong" noises.
It stopped crackling for one evening after an hour with a technician who made me restore to a previous version of windows. The next day problem again.