Change motherboard wont now pc wont do anything

Lleve la computadora a best buy (envy rove 20 k 120) me dijeron que el motherboarf estaba dañado. Compre uno en ebay y luego de montarlo, la computadora no hace nada. Ni siquiera prende el Led de power. Note también que la batería está inflada. Podría ser está la razon por la que no prende

Google Translation

Take the computer to best buy (rove envy 20k 120) I told the motherboarf was damaged. Buy one on ebay and then mount it, the computer does nothing. Not even turn on the power LED. Note also that the battery is inflated. Could this be the reason why not turn