I have bought a VGA to DVI-I cable an connected PC to BV7 32'',  I have done everything as described in userguide. But I can not get a PC picture on TV.

Are there different DVI-I cables where perhaps I should be careful? PC output is set OK, so picture should be seen on PC (laptop) and TV.

Just being paranoid, but have you told your laptop to output via VGA out? there is usually a botton that looks like a monitor that allows you to do so.

Yes I have done this, so PC sends signal to TV, but still no picture. Could be a deffect of HD module a cause for this?

HD module was built in later by B&O service department.