Xbox Live Dropped Suddenly?

try leaving your xbox360 ON (on the xbl test screen) then completely power down your modem/router and after few minutes power up your modem/router. It will help at the time of power down to remove devices that are using wired r wireless connectivity to your mode/router.

Nope, still the same error. If it's any help, this is the Error Status:

W: 0000 - 0021

X: 8001 - 1005

Y: 0000 - 0000

Z: 0000 - 0000

ID: FFFF - FFFF

Dunno what that means, but I just want to play Xbox!

No one can help?? I tried using my second Xbox, same error..

Actually, the 'Xbox 360' connected to 'My Network' but then stopped, and I tried again and it's doing the same error as the original post states.

Was there any other text available when you ran that LIVE connection test? Also, for us to provide the best help, please take a few minutes to answer the bold questions here. 

What Country/State/Province do you live in? United States, New York

Modem brand & model number: SURFboard, SB5120.

Router brand & model number: Belkin, model number is either:

F5D7230-4, or BEL14CGX, I am unsure which is the model number.

Network Connection Type: Wireless/Wired: Wireless

If Wireless, what type of encryption are you using? WEP

Things you have tried: Restarting both my Modem/Router, and my Xbox 360, trying to make a Static IP, everything on the troubleshooting page, plus trying a second Xbox 360 (Slim).

Is UPnP Enabled? Yes/no/Unknown: Enabled.

Is NAT Type Open? As far as I know.

Any Error Codes you encounter: This is the Error Status that I got when I pressed 'Y' after testing the connection, if it helps:

W: 0000 - 0021

X: 4000 - 1001

Y: 0000 - 0000

Z: 0000 - 0000

ID: FFFF - FFFF

What type of internet do you have? Cable/DSL/T1/3G? Cable

Who is your ISP(Internet Service Provider)? Roadrunner

When you run "Test Xbox LIVE connection" what is the exact message shown on screen? "There's a problem with your connection. Select More Info for a description of the problem and how you can fix it." Upon clicking "More Info":

"Can't obtain an IP address from your router or modem.

Your wireless network is secured with a WEP key or WPA passphrase. Your console may be using the wrong one.

On your PC, go to your router configuration webpage and write down your wireless network's WEP key or WPA passphrase.

You can find help about WEP and WPA at www.xbox.com/networkhelp.

In the list of available networks, press Y to disconnect, then select your wireless network again and set it up using the correct key or passphrase. Do you want to set up your network again?"

Thanks.

Can anyone help me??

Go ahead and try all of the steps listed here, as the guide corresponds to the exact error message you listed.