Sound problems can also be caused by incorrect settings, outdated or faulty sound drivers, or interference with certain hardware. If you have checked all connections and wires, and the sound is still crackling and you hear noises, system settings might need adjusting. Check if there are any loose or damaged wires, bad connections, etc. Crackling, popping, noises, and audio problems can occur for a number of reasons and we recommend that you check the hardware. They are usually the result of connection problems - often, bad wires causing interference. Loud crackling or popping noises from speakers or headphones can be annoying and a sign that something is wrong with the system.
