After installing new drivers so my scanner would work, the computer started beeping constantly, and my computer consultant was logged in had no idea where it was coming from.  After uninstalling the changes he made, and unplugging everything INCLUDING THE POWER CORD IT CONTINUED TO BEEP, apparently coming from the power source inside the computer.  Unfortunately, it sat in the box in my office uninstalled for a while, and I have gone past the point where I can return it.  Otherwise, it would be going back.  Never buying an HP product again.