DScaler "No Video Signal Found" problem

[BlizzardStar]

Hi, I bought a TV Card and DL DScaler and it looked fine but it didn´t have any sound; so checking in the setting I entered in Channels, then I just pressed Cancel, but that made the screen to turn blue with the "No Video Signal Found" thing in the lower left part of the screen, I´ve already uninstalled and reinstalled it and reset my PC but it doesn´t seem to work.
Somebody please help me.

I copied this topic from the "Capturing" forum.

[kschang]

Don't copy topics. If we see it there, we see it here, and dupe topics are annoying. I'll answer your question over there.