Because of your internet connection
Get a faster Internet connection.
Sometimes the internet gets hacked or glitches. Just restart your internet connection. And it will work fine!!
Get better internet.
when im not connected to the internet, the computer will run fine. when i turn on the wireless internet connection, the computer turns off and the same happens when i use a wire to connect to the internet.
This link should help you set up an internet connection through another computer on the home network and fix this problem. http://support.microsoft.com/kb/306126/
I assume that your internet connection might be having hardware related issues. Some internet cards aren't compatible with Windows. You might need to change your internet card with a PCI Express internet adapter.
You might want to try clearing your cache or checking your internet connection. Otherwise, your computer may have caught a virus or is normally slow due to older versions or incompatible versions of Adobe Flash. Try upgrading flash if clearing your cache does not work and/or your internet connection is fine.
Your internet can be not faster than your internet connection (DSL, cable modem and so on). If you have a slow internet connection, installing a new router will not fix the speed. It might improve stability of wireless signal and security though.
who ever is hosting the lobby has a bad internet connection and it even happens on other consoles
try switching to Motorola it is easy to hook up
If it is staying connected to the internet and your computer is loosing connection it sounds like the computer has an issue or if your ussing one it could be your router. be more detailed about what you have.