Your hardware is no different to anyone elses. All computers, hard drives and processors will die some day. Add to this that any warning you get is likely more than a tell tale sign of trouble but a post disaster obviousness. In essence you cant restore unless you have previously backed up and secured your backup. This is not helpful to the original poter who lost all his data but will be helpful to you if you heed it. I backup on line. There are a large number of companies doing this.