Trick to Eliminating Programs that Run at Startup

Stopping programs from running at startup is a particularly daunting task, because there is no single place you can go to stop them all. Some run because they're put in the Startup folder, others because they're part of logon scripts, others because of Registry settings and so on. But with a little bit of perseverance, you should be able to stop them from running.
a. Cleaning out the Startup folder
Start by cleaning out your Startup folder. Find it in C:\Documents and Settings\\Start Menu\Programs\Startup, where is your Windows logon name. Delete the shortcuts of any programs you don't want to run on startup. As with any shortcuts, when you delete them, you're only deleting the shortcut, not the program itself. (You can also clear out the startup items by going to Start Programs Startup and right-clicking on items you want to remove.) Next, clean out yourScheduled Tasks folder. Go to C:\WINDOWS\Tasks, and delete the shortcuts of any programs that you don't want to run automatically on a schedule.
b. Using the System Configuration Utility
Taking the previous steps will stop the obvious programs from running at startup, but it won't kill them all. The best tool for disabling hidden programs that run on startup is the System Configuration Utility, shown in Figure 1-5. To run it, type msconfig at a command prompt and press Enter. (If that doesn't work, first do a search for msconfig.exe, and then when you find the file, double-click it.)
Figure 1-5. The Startup tab of the System Configuration Utility

To stop a program from running at startup, go to the Startup tab in this utility and uncheck the box next to the program. To get more information about a listing, expand the width of the Command column near the top of the Startup tab. Expand it enough and you'll see the startup command that the program issues, including its location, such as C:\Program Files\Athan\Athan.exe. The directory location should be another hint to help you know the name of the program.
When stopping programs from running at startup, it's best to stop them one at a time rather than in groups. You want to make sure that you're not causing any system problems by stopping them. So stop one and restart your PC. If it runs fine, then stop another and restart. Continue doing this until you've cleared all the programs you don't want to run automatically.
Each time you uncheck a box and restart your PC, you'll get a warning, shown in Figure 1-6, that you've used the System Configuration Utility to disable a program from starting automatically. If you don't want to see that warning, disable it by checking the box in the dialog itself.
Figure 1-6. Disabled program warning

After you've used the System Configuration Utility to identify programs that run on startup, you may want to try disabling them from with the programs themselves. So run each program that starts automatically, and see if you can find a setting that allow you to halt it from running on startup.
c. Using the Registry to halt programs running on startup
Even the System Configuration Utility won't necessarily let you identify and kill all programs that run on startup. You may also need to hack the Registry to disable them. To do so, run the Registry Editor and go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run. The right pane will contain a list of some of the programs that automatically run at startup. The Data field tells you the path and name of the executable so that you can determine what each program is. Right-click on any program you don't want to run, and choose Delete. That will kill any programs that run specific to your logon. To kill programs that run for every user of the system, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run and follow the same instructions for deleting other programs you don't want to run at startup.