There is no place to plug in my Power switch cable to my new Motherboard

I just put in a new Biostar Motherboard into my HP Microatx case after the HP Motherboard died. Everything is working okay except there is no place to plug in the Power on switch front panel cable. I am able to turn it on by pushing a little button that is on the Motherboard itself but it is annoying to have to open the case and press this button just to turn it on. Is there any way to by pass the power on switch so that it will just turn on when I turn the Power supply on in the back of the case? Please help and thank you so much in advance!