Shuts down

My Western Digital my book starts to start up and the lights come on for about 20 seconds and then it shuts down without ever connecting to my computer. what should i do?

… probably have to replace it.   Check the power supply first, though…

Some standard things you can do:

  1. Connect the power supply to the wall (makes sure you’re getting enough power).
  2. Change USB cable/port.
  3. Try on another computer.
  4. Check Disk Management to see if it shows up there.  If it shows up there, it may be have a corruption partition.

If none of those work, then, yeah, you gotta replace it - unless fzabkar has any ideas.