Display text scrambled. Unreadable

I have an 8gig clip.  SUddenly stopped playing in mid song. It had a full charge, but no music and wouldn’t respond to my button pushing.  Finally managed to turn it off.  It went through a slow motion  “Good Bye” and ultimately went blank.  Later I tried powering it up connected to the PC and not.  Nothing.  I finally managed to reformat it and it came to life but the text is scrambled and unreadable.  It will play music, but it is pretty tough to navigate blind.  Suggestions?