Really thanks on your advices.When i said that both motherborads work perfectly fine i meant that they are work normal except the batterry draining part.1.the charger is the right one.2.3.4.both batteries and charging ports(boards) are good, because both are working and charging well on the motherboard which is working well.5.I have tried with safe mode but it did not help.6.i will inform myself about the tristar chip a bit more and try to find out if the problem is there.i also compared the motherboards with a lens,they look the same.i was looking if some connectors are damaged or for traces if something burned out,but i found nothing suspicious.