My MacBook Pro keeps freezing and not responding correctly.

Question

Okay, so yesterday I finished FaceTiming a friend and I closed my MacBook Pro like I normally do so it can sleep on my account. But when I open it, it keeps crashing (like it shows the screen and then for like 15 seconds it shows a gray screen and then back to the desktop background) and its not responding as fast as it normally does. It doesn't even show the dock where Safari and FaceTime and iTunes is. But when I go to the Guest User account, it all works fine. I don't know if I've been hacked or not but I would really appreciate it if someone has found the solution to this problem. Thank you so very much for trying to solve it in advance and Happy Holidays.

Answer 1

When you have the problem, note the exact time: hour, minute, second.  
These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above.
Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first.
Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.