i haven 2007 IMac running ElCapitan, 2.4 processor, and 4GB ram. It is so slow lately. If I want to move the page up or down or even wiggle the mouse a little I get the spinning beach ball thing. I called into Apple support to ask what I could do to eliminate this and was told they no longer support my machine. Maybe because of its age? I don’t know why. I don’t use this for gaming or anything other than emails, banking, reading the news, etc. Any suggestions of some things I could try to clean it up so it runs faster ??