User blog comment:Dewott the epic/Some help? Please?/@comment-5248325-20140907063554

it seems your comp can't handle mugen 1.1 in 1280x720 mode,  i suggest go into mugen's "data" folder, in the mugen.cfg file, change the "GameWidth" to 640, and change the "GameHeight" to 480 not sure if this will work but thats what i think you should try.