My Mac mini 2011 does not work with my HP w2207h monitor

My w2207h monitor works fine connected to 2 computers. A Lenovo computer connected with a VGA and a think pad connected with hdmi cable. However, I just buy a Mac Mini and connected via HDMI but now, pass the VGA to HDMI causes the monitor to crash/power down. Even the light around the power button goes off and nothing works. To relight the monior screen, the only way is to disconnect the cable from power for a few minutes. The monitor works with an another old laptop connected via HDMI as doeas the Mac Mini connected to an old television set. I thought HDMI HDMI was, but this monior dislikes my Mac. Any ideas?