When you post these words in RED help avoid the first questions for needed details.
ote: If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem.
But that error is well known to be caused by bad cables, USB 1.1 ports, the USB ports on the front of machines, missing drivers, XP (no SP1 or SP2) and so on. But since no details are shared I decline from writing all that is possible.
I have a western digital 300 gb external hard drive we use as a media center. It is full of music, movies, and tv shows. I went to listen to some music and a message said I need to format the drive. I know formatting will erase everything. I cannot do that. How can I get it to work or at least save everything I have