Internal error

[hujiS]

We've been checking everything you wrote.
DirectX 2009 is installed and the drivers are up to date.

however, when we're trying to open the dxdiag panel within the 'Run' menu, we recive error message: "problem getting input file, result code= 0*80004005..".

and also, when we're looking at the input section, it says:
"No input devices detected".

Do you have any idea what can we do to solve it?

Thanks!!