Do you see warning message,when you edit "MSCONFIG" on Win Xp?
now, you can remove this message.
1- Run regedit
2- Search for following address:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
3- Remove "Msconfig Reminder" from list
4-restart your pc

When using "MSCONFIG" to disable startup items you should remove the entries not needed from registry. This should be done to keep the registry as small as possible, small registry helps computer load faster.

To remove disabled items completely from "MSCONFIG", click on Start, Run, type in regedit and hit Enter.

Open the following registry key,
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg\
Expanding the startupreg folder will reveal a further listing of folders which will be named after disabled items in the System Configuration Utility.

Export each key to a file so you can restore if needed at a later time. Do NOT delete the "MSCONFIG" immediate subfolders: services, startupfolder, startupreg, or state.

Anytime you add or delete items from the registry. Back it up before you start, that way you can restore it if something goes wrong.
Caution when editing registry, you may disable or render the computer unusable.

Nils

Hey! I dont have any entries in my "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupreg\" but my MSCONFIG shows number of startup programs. But now, I dont need to use any brute force on these kind a stuff, I use Microsoft Windows Defender's Software explorer to either disable a startup program or remove it completely