virtualbox.org

Unable to load R3 module C:\Program Files\Oracle\VirtualBox/VBoxDD.DLL (VBoxDD): GetLastError=1790 (VERR_UNRESOLVED_ERROR).

Codice 'uscita: E_FAIL (0x80004005)
Componente: Console
Interfaccia: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}

Have a look at this ticket, first answer on a Google search.

I really need to unistall Theme Resource Changer?

Looks like it. At least try without it and see if it works better.