I am having audio problems on my Lenovo IdeaPad 510S with static sounds and occasional crackling. Could the sound card be on its way out? - Quora
After an automatic Windows 10 update, my Lenovo laptop makes a distorted sound (similar to the sound of a synthesizer) and the mouse cursor stutters. What causes these problems? - Quora
![laptop - Power supply makes high frequency noise, is it damaging my battery? (or other parts of the computer) - Super User laptop - Power supply makes high frequency noise, is it damaging my battery? (or other parts of the computer) - Super User](https://i.stack.imgur.com/moQwP.jpg)