Try connecting the TV to the router or PC by direct cable rather than wireless. Some routers will block the discovery packets from transmission over wireless.
I am having major difficulty connecting my Samsung LE40B650 to my Windows 7 Professional PC. I am trying to stream content from the PC to the TV, but the TV is not visible as a device on my PC, and on the TV the PC is not visible in the DLNA source list.
I am running Windows 7 Professional on a desktop PC. The PC is connected wirelessly to my router. The TV is connected via ethernet. I have installed Samsung PC Share Manager, but the problem seems to be that the TV is not coming up in the device list. When I search for devices on my network, my PC can't see the TV at all. I have tried connecting the PC via ethernet to the same router as the TV, and I have also tried turning off my firewall, but still the PC can't see the TV.
My housemate has a Windows 7 Home Premium laptop, and when he turns it on the TV can see the laptop in the source list. It is shown as a DLNA source. Furthermore, I have installed PC Share Manager on the laptop, and it has connected fine to the TV. I have successfully streamed music and movies from the laptop to the TV. The laptop was connected wirelessly and the TV vie ethernet.
Trying exactly the same thing on my desktop didn't work. When I do 'set device policy' in Samsung Share Manager, it doesn't see the TV. When I go to 'discover devices' in the device manager on Windows, it doesn't see the TV either. No idea what to try next. I assume it can't be as simple as a firmware update because it is already working fine on the laptop, just not on the desktop! Any help or suggestions that anyone can give me would be great. Thanks in advance for any light that anyone can shed on this incredibly frustrating situation that has been plaguing me for months now!