Since Microsoft is phasing out the Control Panel applets and trying to move them over to the Settings app gradually, the System applet too appears to have gone missing in Windows 11/10.
There are two ways to run Control Panel as an administrator in elevated mode in Windows 11/10: Open Control Panel in Elevated Mode using Shortcut Open Control Panel in Elevated Mode using Run Let ...
or click the Windows icon in the lower-left of your screen to open the Start Menu. There, search for "Control Panel." Once it appears in the search results, just click its icon. Alternatively ...