Or choose Force Quit from the Apple menu in the top left-hand corner of your screen.

Press these three keys together: Option, Command and Esc (Escape).

Select Reinstall OS X and click on the Continue button. Quit Disk Utility and return to the Utility Menu. Set the Format type to Mac OS Extended (Journaled.) Click on the Apply button, then wait for the Done button to activate and click on it.In order to force quit an app on mac using the Activity Monitor follow the steps below. Use Activity Monitor Ro Force Quit an App: Activity Monitor on Mac is similar to Task Manager on Windows and keeps a track of all the processes running on the Mac machine. Here, choose the app you want to force close on Mac and then click Force Quit.Activity Monitor, can also provide a lot more information such as the performance statistics, cpu and memory consumption by Apps etc. Locate the Process and click the X on the top left to Force Quit an app. Search for Activity Monitor, Click and Open it. Browse to Activity Monitor from Finder- Applications and open it. Method 2: Force Quit from Activity Monitor.How To Force Quit An App On Mac Without Mouse.

Another way to force close on mac