Help with Sound Not working on my Computer

Hello Everyone, Ive just built my new computer and everything is running fine. But ive just notice that when I plug in my headphones or my microphone neither one works at all. Im not sure if I missed installing something for these or if I need to reinstall something again. My speakers work fine and sounds great but when I plug in my headphones nothing happens. The sounds continues to come out of the speakers and nothing goes through the headphones. Im not sure if I can fix this by going into the control panel. Ive tried several headphones that worked on my old pc but none of them work on my new one.

Thanks for your help