Ursprünglicher Beitrag von: originalmachead ,
'''Go over all your connections(ors) again.''' 99% of the time a connection that appears correct or good is not completely seated or locked down. The other cause could be '''the reason you replaced the keyboard''' ''- liquid spill? - '' may have caused damage to the logic board or components. Go over the board with a magnifier looking for corrosion (discoloration) or burn marks/swollen components. ''If this answer is acceptable '''please remember to return and mark it accepted'''.''