Click on control panel, type network in search box and under network and sharing center, click view network computers and devices. Then do you see anything under media devices?
If not then make sure you have turned on network discovery.
or try
open windows media player click on stream and then more streaming options then click on choose homegroup and sharing options now look at the setting you have available.
Could just be something you have missed or we have missed.
Hopefully someone will point you in the right direction but that's all i can think of.
