First off, I am new to the forum and have learned more today about macs that I could have believed. THANKS!! I have searched this forum and read all of the posts about trying to fix my wife's MacBook that has sustained a water spill and still have a couple more questions. The liquid WAS water and my wife let it dry for four days prior to turning it back on. When she did turn it back on, it seemed to work fine for about a week and then started to have problems: rainbow pinwheel for minutes when launching applications and then it died...like dead...will not turn on. After reading all of the posts I could, I started the teardown. When I pulled the memory, the leads when caked with corrosion. I cleaned them thoroughly with isopropyl alcohol and continued the teardown to see what the logic board looked like. Surprisingly, everything looked great. I even pulled the fan to ensure that I did not have any pooled hard water deposits and nothing. So, I put her all back together and tried to power it on and got the same results: when I depress the power button the light on the front comes on and goes off. If I hold it down, it tries but eventually powers down. I have given my wife my MacBook and went out and got a new MBP but, I sure would like to get old MacBook running and let the kids have it for school. 1. Must I somehow clean the corrosion off the connection for the memory? if so, how? 2. Any experience with taking it to Best Buy for repair? THANKS in advance for your help!