start button not always launching mame game

[callymike]

Hi, I have recentley installed hyperspin 1.4 for my bartop arcade cabinet and are mainly using this for running mame. I have set up the buttons in hyper hq. When i run hyperspin and go to the mame menus, Sometimes when i go to press start button on my control panel to start a mame game , sometimes it launches the mame game , but sometimes nothing happens. I sometimes have this same problem if i use the keyboard instead. Also when i exit a mame game i go back to hyperspin menu , the menu is frozen and only unfreezes when i press the mouse button. does anyone have ideas of what is causing the problem. I am using windows 7 32bit with 3tb ram