i got out of work today and go tto my car, but it wouldnt start so i guessed that i must've for got to turn the head lights off or someting. so i asked a co worker to jumpstart my car and it worked but after it turned on the cd player doesnt work and when i turn it on the display says "CODE" and i dk what thats for. so i come home and after a while i was going to the post office, the car didnt turn on i knew this time that the battery is not dead, because allthe lights come on, headlights come on but when its about to start, it makes a cranking nois like the electric motor is loosing power.
so: whats my problem?

cd payer asks for code
engine dosent start the electrick motor lacks power

accord 01' EX coupe

please let me know asap, thanks guys