1. Press Command-Option-Esc on the keyboard to open the Force Quit Applications window.2. Select the program you wish to terminate and click Force Quit.3. Click the Apple logo in the top left corner, select Force Quit from the drop-down menu as an alternate method.
If not successful, please try the attached link for additional ways to also do this.
For further assistance please contact the Catalyst Helpdesk; 01695 650800 or email; email@example.com