Samsung UE40D7000LU E-Manual page 307

Issues
"PC" is always shown on the
source list, even if a PC is not
connected.
The video is OK but there is no
audio.
Network Connection
The wireless network
connection failed.
◀
Solutions and Explanations
•
This is normal; "PC" is always shown on the source list, regardless of
whether a PC is connected.
•
If you are using an HDMI connection, check the audio output setting on
your PC.
•
Make sure the Network Connection is set to Wireless.
•
Make sure the TV is connected to a wireless IP sharer (router).
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