zafira b 06 rear door wont open ?

hi all can some help me please i have an 06 zafira sri im having trouble with opening the passager rear door was working fine then stoped working theres no sounds like power is getting to it and the handle not work either i have managed to get the panal off i also noticed that the window switch will not open the window so im thinking it the plug to the door but for me to get to it i need to open it does someone know how