how can i fix my stereo in my L reg astra?

no power is going to my head unit its factory fitted and wont power on to enter the code how do i reset this
johnno, April 2005


done
yes the fuse is fine i think its something to do with removing it and then putting it back and not knowing the code just guessing it but i know the code know so any ideas

johnno, April 2005
have you checked the fuse?

aa, April 2005