When I open Dota from my desktop all I get is sound and no video. It happened after I attempted to hook my laptop up to an HDMI cable to watch the Manila Majors last night.

I tried many things to fix this: restoring Dota, uninstalling and reinstalling Dota, I went into the program files to check and make sure the resolution was correct, and a small list of other things. Needless to say non of it worked. does anyone know how to correct this issue?

Please message me ASAP or reply to this post with what I need to do to correct this error.