2 Monitor Setup Not Working!

I came from my old laptop,on which everything worked fine. When I got my new laptop, I just opened it and connected the monitors. One of them works, but the other one seems as if it isn't being detected! I have an HP dock that I plug the monitor that won't be detected into, and I even made sure that everything there works!

 

I'm sorry if this isn't the right forum to ask this question, I wasn't sure which one I should post in.

Can anybody help?