Ok, I've only had my Macbook for several days now and I believe a failed system update messed up my computer. On boot up I sometimes get a circle with a slash, and I seem to getting more and more spinning beach balls. Some of which spin and won't let me do anything. Last night I ran Disk Repair and then I ran Time Machine for the first time. My question is that if I were going to reinstall OSX will Time Machine put all of my programs, settings and anything I changed back in the new install? I'd like to put my Macbook back to the way it is now but without the spinning beach balls and startup problems.