Unable to load R3 module

[Saujal]

Hi there,
I am been searching for this error can any one help me out
Unable to load R3 module C:\Program Files\Oracle\VirtualBox/VBoxDD.DLL


Failed to open a session for the virtual machine test.

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

Result Code: E_FAIL (0x80004005)
Component: Console
Interface: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}

Windows 7 64 bit


Please help me out of this

Thanks
Saujal