I am well known at my school for my skills with technology. Mainly hardware... So, my teacher gave me her MacBook that she spilled coffee on. Obvoiusly it broke, so she took it to the Apple store. They took out her HDD and gave it to her. They advised her to buy a 13" MBP to replace her 13" MB. Not knowing much about computers, she did... About a month later, she comes to me, asking if I would be interested in messing around with her computers (she also gave me her circa 2006 MB with a failed graphics card). I said sure, so she brought them in to school today... I took them home, and inspected. The 2010 MB had no hard drive, and no obvious liquid damage on the logic board. So I took out the logic board, replaced thermal paste, cleaned the coffee stains out of the ports, and put it back together... After that, there was no change in its behavior... The sleep light would come on, and the disc drive would make its noise.... So, I reset the PRAM, and it finally made the "BONG" sound... But still no image on the screen. I took the LCD out of the unibody assy... Needless to say, that was the most time consuming part. I unplugged the video cable from the lcd, and noticed some corrosion. I wiped off the corrosion with rubbing alcohol. I spent the next 15min figuring out how to connect the video cable back into the LCD... Finally, I did it... I put it back together, and I see an image on the screen... I then put in my 2010 MBP's previous HDD in it (I upgraded the HDD in it, and I still had all of my files on my old drive). It booted fully, to my amazement. Now on to the 2006 MB that she gave me. It seems to have a failed graphics card, because upon bootup, it shows grey and black lines on the screen, and none of the familiar OSX UI. I'm assuming it's the graphics card, which would translate into a new logic board. I cannot justify putting any money into a 2006 machine, so I guess there is nothing I can/will do... PS: I am typing this on the 2010 MB.