I recently changed my video card and was trying to adjust the video resolution of HoN to match it. However, while trying which resolutions would work best with the game, my monitor suddenly went black and started floating a screen that says "Input signal out of range, change resolution to bla bla bla". I swear I already changed my resolution to match that of the one on screen, but still no go. I'm trying to change the resolution of HoN itself, but that's practically impossible since it only displays a black screen. I can hear my account being logged in in the background though.
Help! What do I do?