Troubleshooting Common Problems

If you're experiencing OS X problems, use this OS X troubleshooting lesson to help resolve your issue.


Do you know what to do if your screen goes blank? What if you can't seem to close an application—or can't hear any sound from your speakers? Whenever you have a problem with your computer, don't panic! There are several basic troubleshooting techniques you can use to fix issues like this. In this lesson, we'll show you some simple things to try when troubleshooting, as well as how to solve common problems you may encounter.

Basic troubleshooting techniques

There are many different things that could cause a problem with your computer. No matter what's causing the issue, troubleshooting will always be a process of trial and error—in some cases, you may need to use several different approaches before you can find a solution; other problems may be easy to fix. As you gain more experience with troubleshooting, you'll start to learn more about what causes common problems and how to fix them. No matter what problem you're trying to solve, we recommend starting by using the following tips:

Troubleshooting specific problems

Now that you know a few troubleshooting techniques, we'll talk about possible solutions for some of the most basic problems you may encounter.

Problem: An application is running slowly

Problem: An application is frozen

Sometimes an application may become stuck, or frozen. When this happens, you won't be able to close the window or click any buttons within the application.

Problem: The computer is frozen

Sometimes your computer may become completely unresponsive, or frozen. When this happens, you won't be able to click anywhere on the screen, open or close applications, or access Shut Down options.

Problem: The mouse/keyboard has stopped working

Problem: The screen is blank

Problem: I can't hear the sound on my computer