1. Remove drive and connect to a working system, configure it as a second drive. Possibly, JUST the boot tracks are the issue. If so, you will be able to view the files on the drive and copy them off.
2. If the drive is not recognized, take a few cans of "air" and blow them upside down slowly to "freeze" the drive, and especially the electronics board on one side. If the issue is a failing chip, this can make the drive work long enough to extract the data.
3. If above does not work, engage an expert, BUT be SURE they truly know what they are doing. Recovering drives is an art, and not commonly practiced. Most "computer" shops are not experts on that.
Then, get a Google Drive and copy all your stuff there as a backup from now on.
ALL hard drives will fail, typically in about 3 or 4 years. If you have one, look at getting an SSD and many come with a cable and software to clone you existing drive. The SSD lasts a LONG time, and you can keep the old HD for a backup.