Even though your laptop is still operating normally and you can access your hard drive data, if it is repeatedly making strange scratching, grinding, clicking or rattling noises, it could well be an indication of an abnormal function, hardware failure [head crash], motor failure or other mechanical defect with the notebook hard drive. It is advisable to immediately turn the computer off. For more information about hard drive failure and data recovery, get in touch with our experts for a free data recovery consultation and quote.