This issue was Resolved UPDATE 3: I erased the entire drive and reinstalled OS X Mavericks, the CPU hogging tasks are no longer running. However, my battery life appears to have been halfed? At 100% it calculates the remaining time at 4 hours and 15 minutes. It used to be around 8-9 hours. Not sure what all happened with my MacBook. UPDATE 2: There's a new problem. After having gone through the Root account and setting everything back up, I noticed that my MacBook Air battery life was only about 2 hours and 30 minutes at 100% when it used to be around 8-9+ hours. I looked at Activity Monitor and I noticed some tasks being run by the Root account that is using over 100% CPU power? UPDATE: I solved the issue by following the steps listed here: http://www.personalmacgeniuses.com/2013/10/31/case-of-the-missing-admin-account/#.U8M0GlY2zf4 I reinstalled OS X 10.9.4 and when it was finished, I noticed that all of my Admin accounts changed to Standard ones. I'm unable to change any of my settings. How can I fix this? Thanks!