Windows 10: Configure TV to PC

Hi All, No genius here, more like 63 year old dinosaur.
Monitor has a DVI to PC cable.
PC has a Cat 6 to Modum (Smart TV in lounge operating on wireless, Cat 6 unplugged).
Can watch Netflix on Monitor no problem, but screen too small from bed, so have taken my HD TV and connected it with a HDMI to PC, trying both No 1 & 2 ports on the TV and selected settings respectively.
Cannot get a signal and display options on PC monitor, cannot detect TV/ 2nd screen.
So with HDMI still connected, I connected a VGA cable from the Monitor to the TV. No luck
Operating Win 10 32 bit Pro OS, x64-based processor. .AMD FX 4300 Quad Core Processor 3.8. DTV 2000 DS Plus TV Card.
Thanks for your help and direction*Nerd. So end desire is to stream Netflix. All tech references to cables are from Googling, not my incredible Technical brain.

:)

 

'Cast to Device' no longer working

Just as an update, I am able to successfully watch an episode when I start from the tv and use the tv's built in app. This has me thinking it must be something on the pc end for sure and not the tv or the network configuration.

 

How do i stop desktops changing when i power of a monitor?

I run 2 PCs and both of these conect to my TV. Both run Windows 10.

PC A is only connected to the TV

PC B is also connected to another two monitors.

When i switch the TV from PC B to PC A it changes dektops on the other two screens connected to PC B as the TV is no longer recieving the signal from it.

How do I stop it from doing this.

I want it to do nothing just leave everything as it is as ill be switching channel on the TV back to it in a few moments.

please note: that this is the only acceptable configuration in which i wish to run.