Windows 7: Connecting Windows 7 to Xbox

Hey. I have read alot of these solutions but nothing seems to be working. I am having problems connecting my windows 7 x64 pc to my xbox. My 2 roommates can still connect to their xbox but mine isn't showing up. It was showing up before I upgraded. I was wondering what I should do. My computer recognizes the xbox but the xbox doesn't see my computer. I have attached a picture of my connection map.. hopefully that will help. I have tried the 8 digit key and media center extender but that doesnt work.. Thanks alot!