cd player won't work

my friend came over last night telling me that her car battery had died and she had to replace it. i put in a new battery but the cd player will not work not. it doesn't give me any error corde it just says "error". there is a CD in the player. two questions 1)any ideas on how to fix it? 2) something the dealer has to do? the car is a 2000 honda civichightek

alpine cda-9827

12" Brahma

Eclipse DA6213

and still working on it

Most Honda radios have anti theft. If you kill power to the radio you need to type in a code for it to work. Check the owners manual to see if there is a code. Jazzy

to hightek, is the cd player a stock unit, factory radio or aftermarket?mrhifimrsound