Students frequently call me with some version of the following question: "When I hit CTRL-ALT-Delete and bring up the Close Program Dialog Box, I see many strange things and I don't know what they are or what they do. Do any of these items slow my system down or adversely affect it in some other way? If so, how do I close them without crashing the computer, freezing it up, or causing it to restart and lose all my information in memory?"
The Close Program dialog box shows the programs that are currently running in your system's memory. Don't be surprised if you aren't familiar with many of them.
In the old days, before Windows 95, the keystroke sequence Control-Alt-Delete, or the "three-fingered salute", was used to reboot your system. Today it gives you access to the programs running on your machine.
From the Close Program dialog box you can close any of the programs you see. (Figure 1) Just highlight the one you want and click the End Task button. Close as many programs as necessary, but you can close only one at a time. You also can shut down the entire computer by clicking the Shut Down button.
The real purpose of this dialog box arises when a program misbehaves, or malfunctions in some way. Sometimes a Windows program will just stop working, while the rest of your PC carries on blissfully unaware that anything is awry. If you bring up the Close Program box, you'll likely see the words "Not responding" next to the name of the program. Your best bet is to close that program using the End Task button. You may get a secondary window that pops up asking whether you want to wait a bit longer or kill the program.
Many items in the Close Program dialog box may seem meaningless. They are programs running in the background or components of Windows. For example, one is SYSTRAY. This stands for System Tray, the area on the far right of the Windows taskbar that contains the clock and miniature icons, such as the speaker.
You are certain to see EXPLORER. This is neither Windows Explorer nor Internet Explorer. It represents the Desktop GUI and should not be shut down unless the Desktop is doing something weird. If you do this, however, any program icons that normally appear in the tray will disappear. You'll have to restart them in order to regain access to their capabilities. The easiest way to do this is to reboot the system.
If you're running the Plus feature, look for SAGE or System Agent. Shutting this program down won't affect any essentials of Windows, but you may notice certain features have suddenly stopped working.
When you bring up the Close Program dialog box, you will see Systray, Explorer, and possibly Sage. The first two are required system components and should be left alone. Sage should also be undisturbed unless you're performing system diagnostics. What about everything else in the list? Is there any way you can learn something about those items that by themselves provide no clue as to what they are or what they are doing? In a word, maybe.
Let's examine one you may see called Imgicon. If this program is visible, open the Find function, and in the Find dialog box search on the C: drive for the file. One of the results should be:
Imgicon.exe C:\Program Files\Iomega\Tools
Doesn't Iomega manufacturer Zip drives? It turns out that this file is part of the driver system that comprises the interface between your PC and the Iomega drive. If you see Pop90, you'll find it's part of WordPerfect Office. Those using Microsoft Office are likely to see Osa, which is Office Startup Assistant.
You may or may not have any of these programs, so let's examine how you might be able to discover what those other strange objects in your system really do. One of the programs in my list was a file called Au30Tray. Its name provided no hint of what its function might be. I started out by bringing up the Find tool, did a search, and got the following:
Au30Tray C:/Windows.