[Q] Help whit new board of moto G topic

hi, well the deal is i just buy a new mother board for my moto g becouse i break the old, but with this new board i have troubles with the wifi in fack this don't work, i try to activate but it turn off immediately, and when put the camera i can't see the back camera only give me acces to the front camera...
my question is, try to change the rom(maibe it software problem) or ask for the money back.