Factory Deck - Error 5

Hey guys, I'm new to the forum & new to the Aveo. Recently bought a 2004 Aveo used, car is in great condition, works well. Only minor issue is that the car radio started to display Error 5 recently (while using burned CD's). Not sure quite what the issue is, as prior to a week today it used to play burned CD's fine. At first it would display Error 5, which could be cleared by ejecting the CD & reinserting the CD, but as of a couple days ago it now just displays Error 5 then returns to the AM/FM stereo. Any help would be awesome, thanks!