If it was quiet until now, my best guess is that the disk is compressed, sometimes just removing it and reinstalling it can solve this. This is part 3005.740. I also sometimes see the black plastic part of the disk get cemented to the drive unit by calcium and then rub through the silicon rubber disk. In this case it needs a new disk. I would contact the dealer you purchased it from. I believe we don't have a repair center in Malaysia, they will likely ship it back to Germany for repair.