This started happening yesterday.
I and my buddy played GOW yesterday, then somewhere in the middle the 360 gives a display error (not the red light ones) that it can't read the DVD. So I figured the DVD laser is dirty.
I put in my DVD cleaner (the disc with the brushes) and noticed that 360 is having a hard time reading the cleaning disc (very ackward). The cleaning process is very laggy (with 360 often shows "trying to read the disc" message).
Then I plugged in the GOW again. Now, it doesn't read the disc at all. I also plugged in other games just to make sure, and it still doesn't read any of them.
I change the stand from horizontal to vertical, it still doesn't work.
Now the 360 doesn't even respond to any disc inserted to it. When I put in the disc and close the tray, the 360 keeps showing the opening dashboard display (the one with your usertag, how many games you played, your achievement etc.). It's like it doesn't even know that there is a disc in in.
Another unusual thing is that there is no red lights or any error codes at all. It is as if the 360 is fine but it doesn't know that there is a disc inserted to it.
Any ideas what's going on?