OK, I just FINALLY got my 360 yesterday. Woohoo, yay for me.
I'm running XP-MCE2005 on my desktop, update rollup 2. I run through the MCE setup on the 360, go to the PC and run the setup program and enter the 8-digit code. The PC sees the Xbox and authorizes it. But then it goes to the "testing network" screen and it won't communicate; eventually times out. The Xbox at this point is on a black screen, with a very faint Media Center logo in the center. It will not respond to ANY control input at this point. If I start Media Center with the remote, it does the same thing... I see the popup when it logs into Live, then black screen with faded MC logo. I have to power down the 360 to get out of this.
I'm on a WIRED network, Linksys router, no firewall, no antivirus, etc. PC is xxx.xxx.15.100 and the 360 is xxx.xxx.15.101, DHCP assigned. The 360 has internet connectivity but I can't ping it from my desktop (WTF?).
Is this "lockup / freezing" issue common? I've seen numerous threads about people having difficulty establishing a connection, I've enabled UPNP and the other services suggested. I've forwarded a set of ports as recommended in one thread, but I don't think that SHOULD be necessary as that normally only applies to traffic from OUTSIDE the LAN coming into the router.
Anyway, I'm frustrated as all HECK right now. Thanks in advance to anyone who can point me in the right direction.