I have a macbook pro 15 and after spilling of water on it, didn't turn on. So I had to replace the keyboard. Trackpad is not working either. After replacing the keyboard I could turn it on and even it works when the OS is has not coming up. I can choose the boot device for example on boot menu but then in the Mac OS it's not working. I tried even reinstalling the OS but it didn't help. One more thing is that my own macbook has a european keyboard but I replaced it with a US keyboard. I don't know if this could be the problem. Can someone help me out with this?