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A hangup, also called a hang, is a condition that sometimes occurs when computer programs conflict or do not run properly. The computer seems paralyzed. Clicking the mouse has no effect, regardless of where the arrow or cursor is placed.

Sometimes a hangup will resolve itself. In some instances, the loading of a large amount of data (for example, downloading a complex Web page) can appear as a hangup. If you see an hourglass symbol, you should wait a couple of minutes before concluding that the system is hung up. But if the pointer appears and you cannot get a response by clicking on anything or by striking various keys on the keyboard, you will have to terminate the application or reboot the computer.

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