It has been three weeks to a month since i just bought my new xbox and today it states "To use a wireless Internet connection, connect an Xbox 360 Wireless Networking Adapter to your console. Why has this happened?
IF your slim is saying that. It will need a repair. You can start one here:
Learn how to get your Xbox product repaired
Also if it has been less than 30 days seince you bought the console you could take it back to them and extchange it for a new one.
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