Alright, so my friend and I are have a microphone issue. I can hear and talk to other people just fine, and I can hear him fine. But when he tries to listen to someone, he says he can't hear anything. Is it that his mic's reciever could be broken?

We tried that.

I was playing with my friend, so I sent him an invite to join my game on MW2. But, instead, he accidently hit "Block Communications" so now I can't send messages and stuff to him. Any way to undo this?

My only game I have that has a deep scratch is MW. It happened again a few hours ago with Army of Two: 40th day.

Use that option where you can set a time limit of how long you can play per day.

No, my Xbox is laying on it's side. It's always been like that.

My friend wanted to play Skate 2 with me, so I got up and put the disc in. We played for about 15 minutes, then it said "This Disc is Unreadable" and it also happened with my Army of Two: The 40th Day game yesterday, when it was Brand-New-Out-Of-The-Factory-Mint-Condition. So, I'm really PO'd. Can someone help me?

My friend wanted to play Skate 2 with me, so I got up and put the disc in. We played for about 15 minutes, then it said "This Disc is Unreadable" and it also happened with my Army of Two: The 40th Day game yesterday, when it was Brand-New-Out-Of-The-Factory-Mint-Condition. So, I'm really PO'd. Can someone help me?

Then hook up the computer/laptop into the router with a cord. That's what I do.