Samsung SMART TV E-Manual page 201

Computer Connection
There is something wrong
with the TV.
The "Mode Not
Supported" message
appears.
The video is OK but
there is no audio.
Networking
There is something wrong
with the TV.
The wireless network
connection failed.
The Software Update
over the network has
failed.
Set your PC's output resolution so it matches a resolution supported by the TV.
If you are using an HDMI connection, check the audio output setting on your PC.
If you are using a DVI to HDMI cable, a separate audio cable is required.
Make sure the TV is connected to a wireless IP router.
Check the network connection status.
If the TV is not connected to a network, connect to a network.
The upgrade will not proceed if you already have the latest software version.
Try this!
Try this!