My picture was like 1380x640 but now its 680x480 and i cant play my xbox because the picture is messed up how do i change this... ive tried going into setting and nothing works..

cant

At any cost do not disable the NAT - because thisis the feature which allows multiple device to work with router

So only option you've got now is to reset the router. It should be at the rear end of the router. Hold onto it for 30 seconds, u'll see the light flash and router reboot

Once you've done with that - configure router and make it work.

And as of for the Xbox Issue try these steps:

1 - Assign a Static IP address in the Xbox:
- Go To Network Settings - Configure Network
- Change IP settings to Manual
- IP Address: 192.168.2.45 Subnet Mask: 255.255.255.0 Gateway: 192.168.2.1
- DNS settings to Manual
- Primary DNS: 192.168.2.1 Secondary DNS: 4.2.2.2

2 - with any of the Wired Computers
- open IE - type - 192.168.2.1 - u'll get the Router Interface
- left hand side in the list of options
- click Firewall - leave password blank - disable and apply changes
- click Virtual Servers;
- under enable place a checkmark
- description : Xbox, Inbound Pot : 80(if there are two boxes here duplicate in both the boxes), Type: TCP, Private IP: 45, Private Port: 80
- So Similarly fill up the table for these following Ports
TCP: 80, UDP: 88 Both(TCP&UDP): 53, 3074

Additional Note:

If u've a DSL connection, call ur ISP and make sure ur modem is bridged and the NAT is disabled

Sometimes on a remote theirs a zoom button or HD zoom if you pressed that the tv will do what you describe if you press it again it will go back to normal view.

It could be your TV messing up, are you sure its your Xbox 360?

fallout games are always known to make game consles mess up just send it off ad get a new one

Take a note of the IP Address Of the Xbox

Connect Router - Computer ( Wired )

Open RSP By typing 192.168.2.1 on the Address Bar of internet Explorer

On the Left Side Click Firewall

Leave the Password blank and click Submit

Disabled it and click Apply Changes

On the Left side Click DMZ

Enable it and Give the IP Address of the XboX in it

Click Apply Changes

Restart the Router

And test the Connection

Let me know if it works

this happens when your xbox overheats. its happened to me a few times too.

rate

ive the oposit problem i want to play hitman which is 50hz game but im using a hdmi cable and it isnt possible to run it in 50hz , 60hz only i think so if you get the new hdmi cables it should fix your problem (if you have a hdmi port you should be using it anyway for the best picture)

He either set parental settings to which you cant play online, or he disables your wireless internet connection.

1. Reconnect your xbox 360 console to your wireless network.

2. Check your parental settings and make sure they are set to your likeing.

3. If all else fails, call 18004MYXBOX

you ring microsoft, say you have 3 red lights (which you obviously dont have) and they take some details and you send it off and they send you a new one. Same thing happened to me, and thats what i'm doing.