My Xbox 360 won't connect to my pc anymore.?

Question

For a while my xbox 360 would stream music from my laptop just just fine. Last week, my friend csme over and messed with my laptop while I was out on a date. Now my Windows Media Player brings up my media sharing options whenever I open it, and my Xbox doesn't seem to connect to anything except my tversity server. I've triple-checked my firewall through my anti-virus program, Windows Defender, and even my gateway (2Wire 2701HG-B) to make sure all the appropriate ports are open. Could someone help me?

Answer 1

I didnt read everything but check you Device manager or NIC.