Clear items left in the system after software uninstallation

Q: From the control panel, “Add or Remove Programs” uninstall software, the software is uninstalled, but it still exists in “Add/Remove Programs”. Although it does not affect the operation of the system download, it always feels awkward, how to completely remove it?
A: This is because the software is not properly uninstalled, such as directly deleting the folder where the software is located, or accidentally uninstalling If something goes wrong, the "Add/Remove Programs" window may leave information about the software. There are two solutions.
1. Remember the software name, find the corresponding CPL file under the Windows 7 system\\System folder (because each deleted item corresponds to this CPL file, the CPL file deletes the deleted item and there is no more). After deleting, the corresponding item in the control panel will disappear.
2. Start the registry editor. Navigate to [HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersin\\Uninstall], select the application name you want to delete, right click and delete.
We can also use some system optimization tools to clear the xp system under the software after the uninstallation, for example, "Super Rabbit". In the “Super Rabbit” window, select “Control Panel”, and the useless information can be easily deleted in the pop-up dialog box.