Blue Ray for PC to TV viewing-

The simplest way is to cable your computer directly to the TV (or AVR). To do that, your computer has to have audio and video output connections which are compatible with your TV or AVR: VGA and analog audio connections often are available. Many modern computers have HDMI or Display-Port outputs which can be used with HDMI adapter cables.

Network connections are more complicated because you have to install some kind of Media Server software on the computer which is compatible with whatever software is provided in the BD player, TV or AVR. Many support DLNA protocols.

Whether or not a Blu-ray player can access a home networked media server should be mentioned in its user manual.

AVR = Audio Video Receiver. It's a device which can take audio and video signals from many different kinds of players (Blu-ray players, CD players, Cable boxes, over-the-air and satellite radio, etc) to drive display devices (TV, projector, etc) and a surround-sound speaker system.

Many (but not all) modern AVRs include USB and network connections and can access a home networked media server as well as Internet entertainment services, as do many Blu-ray players.

BD = Blu-ray Disc

DLNA = Digital Living Network Alliance. They're an organization which has defined a standard for transmitting audio, video and pictures from media servers (including smartphones) to DLNA-certified output devices. DLNA media server software packages are available for computers. Some are free and some are commercial.

You're very welcome.

What TV do you have? Some of the new ones include a network connection. Some have USB or memory-card slots (as are used by digital cameras). If it has USB, you might try putting a movie on a thumb drive. Check the manual to see what formats it can play, of course.