My SP is making a high pitched static/screeching sound from the bottom left corner of the device. I starts as soon as I startup the SP and does not stop. I can only hear it in a quiet room or if I hold it up to my ear. I'm typing this in my bedroom and the sound is faint but it's giving me a headache. Is the sound normal? It doesn't sound like the cooling found because it's a static sound. Kind of sounds like the old Morse Code telegraph machines. Maybe the hard drive?