To change the Log-out option, go to Apple > System Preferences > Security & Privicy > General and uncheck the box " Require password [______] after sleep or screensaver begins"
For the login window problem, see > OS X: Login window partially appears, cursor movement redraws screen
I had already done that for the screen saver a few weeks ago. Unfortunately, since I'm new to mac I can't do a screen shot, but several users had recommended going to Apple > System Preferences > Security & Privicy > General and uncheck the box " Logout after [______] minutes of inactivity." There was a screen shot in one conversation I had and it showed 5 options under this specific tab, including the auto logout option. My mac only has 4 options and does not include the logout option in this area. So I started looking around under every single app under System Preferences and when I opened Security & Privacy, on the bottom right corner is a button for Advanced. I opened that and the option for Auto logout is there. I unchecked it. So we'll see if this solves the issue.
Thanks for all the input. I appreciate it.