Have a Maxtor OneTouch 4 Plus 750 GB external hard drive. Suddenly does not function properly as my laptop does not recognize the hard drive (usually labelled drive “E”, “F”, or “G”). When the USB cable is plugged in, the hard drive makes a buzzing sound, followed by a series of “blip” sounds. I am searching for a method to extract this data (approx. 560 GB) from my hard drive without losing the data. Is there a home remedy for this as I am skeptical to send this to the third party manufacturer and pay $275-$500 or more for so called “experts” to attempt to extract the data? Any insight on this would be much appreciated.