Static noise when playing back recording, sounds like the wind

This camera has a single Mic - make sure your finger isn't over it though -- try making a recording in a closed room - no wind noise - is there still static ??
Go through settings and see what choices there are -- like outdoor , indoor . close to subject etc.
My CAM had a close up and background button - which was a sensitivity setting - and the background setting picked up EVERY sound from miles around and filled the tape with noise. The close up setting only picked up sound from bout 2 - 3 meters.
Do you also have an external plug for a Mic ? this would also check whether it's the camera mic or recording that is at fault ??
Ray