All of a sudden, my radio sometimes won't turn on when I start my car. Sometimes it will turn on randomly while I'm driving, and other times, like right now, I've been in my car for a half hour with no luck. There are sometimes where I will mash buttons on the radio to hopefully get it to turn on, and by doing this, I found that pressing the "load" button for the CD player turns the screen on the radio on. I can still eject and insert my casette tape, but the screen doesn't turn on. When I press the load button, "please wait" lights up on the screen but no other buttons work to navigate other places on the screen. The eject button then turns the screen off again. All of the other dash lights work and the AC system screen works. What could be wrong with it? I've already replaced the fuse and this still happens.