External hard drive. Good afternoon. I am having a problem with my external hard drive. It isn't

Question

Good afternoon. I am having a problem with my external hard drive. It isn't showing up in my computer and it seems to be running but first it makes a few clicking noises then winds down and doesnt seem to be running anymore. Then will run again and same thing, click and wind down and stops. There is power, but it wont load my information. Thank you in advanced for your time.