Help connecting xbox to pc help +Rep

[Fifteen]

got the code from my xbox
open windows media centa
go to tasks
add extender
add the code

then it trys to set-up
it configures computer settings, setting power saving features, search for extender

then when it gets to configur extender settings, setting media locations and connection to extender failz!1111

can anyone help me plss? :)
+rep for all help