Samsung UN55ES6150 E-Manual page 151

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If Plug & Access does not connect
your TV to your wireless router,
a popup screen appears on the
screen notifying you of the failure.
If you want to try using Plug &
Access again, disconnect the USB
memory stick, reset the router, and
then try again from Step 1. You
can also choose one of the other
connection setup methods.
5. The network connection screen