Some drives make extra loud noises if a part of the mbr is corrupted, the Firmware tries repeatedly to go to that part of the drive where the data is supposed to be, or "over further" to find the data; if the drive was formatted incorrectly.. Firmware could ask the heads to read too far over and contact the heads bumpstops in the parked position, or on the inside track.. If you got a friend closeby that knows how to work on laptops, have them pull the drive, and hook it to an adapter/PC then recover it on the PC, find the lost files etc.. If they can't make a backup, atlease they can re-format it on the PC or test it for physical errors.. If it makes the PC powerdown; then you know the drives putting both feet into the grave...