Disc won't load and then shows weird symbol in right corner

My portable dvd player will not load the dvd. It just keeps spinning and loading (note--the spinning sounds a little louder than usual--here and there, but not all the time). It even flashed the word open a couple times as if I was removing the disk--when I was not. Finally it will stop loading and just display the Audiovox dvd logo and show a weird symbol in the right hand corner. The symbol is shaped like an oval with a square in the center. I have turned it on and off several times to reset and unplugged it. I have looked through the manual and there are absolutely NO troubleshooting pages or help!! Any ideas what might be wrong?