Black magic Design Desktop Video

Hi
I purchased a Blacmagic H.264 recorder. However now I've got an issue.
I cannot set up it the supplied software.
I get this error message:

Blackmagic Design Desktop Video Setup
Unfortunately,this problem isn't exact for this application; I find this or a same error when I am trying to set up all type of software. I feel it must be in registry trouble, it all began after I had a press the reset button in a couple of PCs.
I need to solve this issue. I need your help. Please help me.
Thanks.
