1. Add This-PC Desktop Icon
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu /v {871C5380-42A0-1069-A2EA-08002B30309D}.default /t REG_DWORD /d 0 /f
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel /v {20D04FE0-3AEA-1069-A2D8-08002B30309D} /t REG_DWORD /d 0 /f

2. Add Control Panel Desktop Icon
reg add HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel /v "{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0}" /t REG_DWORD /d 0 /f
reg add HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu /v "{5399E694-6CE5-4D6C-8FCE-1D8870FDCBA0}" /t REG_DWORD /d 0 /f