Inside windows 7 or above for security reasons there are many settings that may impact the frame playing pictures though UPNP/DLNA.
so when you have a problem playing pictures from Windows compute through DLNA/UPnP check your security settings in the computer especially this related to sharing or upnp/dlna, or see other articles in this pix-star knowledge base.
one more thing that some user noticed is that a setting change as described below might help.
here what to do:
then choose Media Streaming options->Show Devices on all networks->find frame ("Unknown Device") by MAC number-->Customize--> select "Make all of the media in my library available to this device".
REMARK: the MAC address you need here is the same as the serial number of the frame.
so you do this change above .
before that most probably your computer was in default settings , so the "Use default settings" was checked.
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