Laptops in this price range should not have coil whine, electric buzzing sounds or screen flicker. I would've returned it immediately. I have to use a very exp

Laptops in this price range should not have coil whine, electric buzzing sounds or screen flicker. I would've returned it immediately. I have to use a very expensive HP Z-Book for work with a power adapter that has a loud coil whine. I've fixed it by not using the power adapter and only plugging it in when I'm away for lunch or on the toilet.