i have a 07 vectra design with a cdc40 installed, bought only last week. everything on the stereo works perfect apart from the cd player, ipress the eject button to bring up the menu for the 6 cds and nothing. wont eject anything, says no cds in at top, and all of them below say cd in i press eject on em and nothing, while cd 4 and 5 say invalid cd but theres nothing in there, anyone got any ideas on what i can do a reset maybe or something