Mac Mini - Constant beeping - Brand new

Hi,

I just got my brand new Mac Mini, and as soon as I started it up, it started beeping from its internal speekers.

What could be the reason? Its like a static beep, low pitched, and occurs around 2-3 times every second. As soon as I boot it, it starts and never goes away.

Thanks for any help, otherwise its working fine, I am typing from it now.

Setup as a HTPC, connected via HDMI-DVI to LCD TV, and using a usb keyboard for the time being.

Thanks

Ben

When I plug in a headphone, it goes away. Still bothering though.

When I remove the headphone, the beeping sounds come back after a while,

Thanks,

Ben