This is driving me INSANE. For the past 2 days I've tried figuring out wtf is wrong with my connection from my xbox to my PC and haven't been able to solve ANYTHING. Has anyone else had issues like this before??? Here is what I've tried so far:

1. My xbox and pc are on the same network (wireless)
2. They were working fine a few days ago and then BAM I can't connect them anymore
3. Tried resetting the extenders from WMC to Xbox and that did not work
4. Tried opening up Firewall things and that didn't work
5. Did a bunch of other technical stuff for opening up ports and what not, and yet still no connection is being made by the two.
6. Tried resetting modem, worked before when it happened but it's not working now.

CAN ANYONE PLEASE HELP ME. Those stupid tutorials for 5 year olds that microsoft has DO NOT HELP. Any computer nerds out there!?!