First DO NOT BUY MacKeeper. It is as close to Malware as you can get.
Boot the system from the recovery HD, Command+r at stratup. From that you erase the Macintosh HD partition usig Disk Utility and then exit DU when that fiinshes. Then select Reinstall Mac OS X. Your current versionof OS X will be downloaded from the internet and once that is finished the system will reboot and the install will start. When that completes your Mac will be like it was when you first took it out of the box.
Thank you so much for the help! I had heard bad things about MacKeeper and I don't want to screw up my macbook any more than it already is! I will do as you suggest. Do you believe this is the best solution for the problem I described?
Should I load my Adobe Creative Suite 6 (in the cloud version) on an external hard drive?
I am so tired of this spinning wheel....should I avoid putting the CS6 on my macbook pro altogether?
I have it on my desk top mac, but wanted to be able to take the photo editing with me when I am "out and about". I know I should probably buy the ipad, which would transport much easier, but even the ipad probably doesn't have the capacity to hold all the Adobe CS6 apps, correct?