I just bought a new Samsung 2233SW 21.5" wide screen monitor from sams club. As I took it out of the box, I heard a sliding noise from inside of the monitor, sounded like what I though was a lose or broken part. Anyways, I plugged the monitor in thinking it would not work and it works perfectly. Should this monitor be making this sliding noise from within? Whenever i turn the monitor on its side I hear this noise.