In order to deinstall WEB Report System PSIM, run the following command in the wmic.exe utility: 

/NODE:"Computer_name" /USER:"User_name" /PASSWORD:"Password" product where name="Product_name" call uninstall

Here Product_name is the name under which WEB Report System PSIM is installed. In the English version, it is usually "WEB Report System PSIM v.Build_number". The name can be found in the registry in HKEY_LOCAL_ MACHINE\Software\Microsoft \Windows\CurrentVersion\Uninstall section.