MacBook 3 beeps + black screen?
just got a computer in that went to grey screen + 3 beeps, found out the right ram slot was no good, so i pulled it, it started, then i put in a HD and began to install a new OS onto the new hard drive. the installation errored out twice saying it couldnt install about halfway through. after restart, the computer stopped working completely with 3 beeps plus black screen, i tried multiple ram sticks on both sides with the same result. did the good RAM slot suddenly go bad? what can i do to fix this, there is literally no explanation for why it went bad?