Hung application
When you repeatedly double click a program icon but with no results, the application may have hung.
The way to solve this in Windows XP and 2000 is to right-click the Windows task bar and click Task Manager on the menu. Next, pick the Processes tab in the application window and click the list box column head labeled Image Name to arrange the applications running. Locate the application you want to open. Right click the offending applications and choose End Process, then click OK. Do this again until all programs close. Close the Task Manager and begin the application once more.