Cannot connected wi-fi ?

So are you using your internal wi-fi or your hooked up to your laptop to connect? If there is a webpage to use then the internal wi-fi adapter won't be able to do that as that xbox cannot access webpages

Thank you for contact us! I'm Anderson, an Independent Consultant and a Microsoft user like you.

Good afternoon

If your console is not recognizing the Wi-Fi module, there may be a hardware issue with the console's Wi-Fi component or antenna. The Xbox 360S model was released with built-in Wi-Fi capability, so it should not require a separate Wi-Fi adapter to connect to wireless networks. Check to see if any cables or connections are loose or disconnected. Unplugging the power cable from the back of the console, waiting for 10-15 seconds, then plugging it back in and turning on the console. Check your router's settings to ensure that it is broadcasting the Wi-Fi signal and that the security settings are correct. If your console still cannot connect to Wi-Fi, you can try using an Ethernet cable to connect your console directly to your router.

Is it over Wi-fi or is it a LAN connection? If it's over wi-fi speeds will definitely vary.

If you are attempting to connect to wi-fi, you need the password for that wi-fi. If you are trying to connect to wi-fi that is not password protected, you need to have access to the modem itself, as you need to reset the modem or the xbox will not recognize
it.

Is your wi-fi working fine cause i run on wi-fi and it works fine apart from a high 200 ms latency how is your wi-fi connection ?