This video shows the procedure for removal and replacement of the Hard Drive in your Inspiron 3481.
Welcome to Dell Tech Support.
In this video we'll go over the steps for performing a part replacement on your Dell PC. First unscrew, then use fingers, to remove base cover.
Now unscrew and disconnect battery. Then unscrew and disconnect hard drive. Now unscrew and remove caddy. Once replaced, your PC should be ready to be used again.