For Christmas/birthday presents I got a new hard drive and Ram for my 13' Macbook. I finally got the hard drive installed after working on it for 4 hours the other night. But while trying to install the new Ram I keep getting issues. I install it just like every manual tells me to but when I go to start my computer my screen is completely black and the indicator light keeps blinking. I know my computer is on because I heard the fans and everything running. Anyone have any idea what I am doing wrong?