Recently cleaned out my white 13" 2009 Macbook. Opened it up, dusted it out with a can of compressed air and re-assembled it. After booting up, I noticed the trackpad cursor was acting strange, and kept selecting a single file on the desktop. Afterwards I realized these keys completely stopped working on my keyboard: F3, F4, 3, E, D, C, 6, Y, H, N Went back to open the computer up, and checked the cable that connects the keyboard to the logic board. It was properly connected, nothing seemed wrong with the connection. I didn't touch any of the inner-components while dusting it out. So any idea what's going on?