@AaronD is still doesnt work, any other fixes?
Well, there's a brute-force method, otherwise it's just the checkbox in the display/window capture properties.
The brute-force method is to get a (good!) physical video capture device, and use that as your source. Either get one that has a passthrough, or get a 2-output splitter to go with it. (same architecture either way; the passthrough is simply an internal splitter) The physical output of your computer goes to the splitter's input or the capture's input, and the monitor connects to the splitter's other output or the capture's passthrough. Then you get EXACTLY what's on the screen, with no exceptions at all.
But make sure you get a GOOD video capture device! The $20 HDMI->USB things are just trash. No guarantee that they even work at all, and if they do, they're often not as advertised, or the advertisement is sneaky and deceptive. Don't bother with those.
If you have to use USB, spend about $100 on a single-channel name brand device. Or if you can spare an internal PCIe slot, those tend to be a little bit cheaper per channel.
If you end up with a multiple-input PCIe card, that can be really useful too, for future expansion if nothing else, but there's a pitfall with them too: The cheapest multi-input captures are designed for security systems that only need to see one at a time, so they only have one converter (the expensive part) and a quick-and-dirty switch to connect just one input at a time to that converter. Make sure you get one that has a dedicated converter for each input, so you can see all of them at once, which is not necessarily the cheapest.
I kinda like these myself, at least for their 4-input cards:
Acasis PCIe capture card supports multiple HD resolutions (such as 4K60Hz), bringing crystal-clear visual effects to the audience. It also supports quad HDMI or SDI simultaneous input, allowing you to flexibly adjust between different camera angles or input devices. Solve your professional video...
www.acasis.com
PCIE CAPTURE CARD AC-4HDMI (Quad HDMI-1080P60).zip AC-4SDI (Quad SDI-1080P60).zip AC-4HDMI PLUS (Quad HDMI-1080P60).zip AC-4SDI PLUS (Quad SDI-1080P60).zip AC-VS2583 (2 HDMI-4K60).zip AC-VS2584 (1HDMI+1SDI-1080P60).zip AC-VS007 (Dual HDMI-1080P60).zip AC-VS014 (2HDMI+2SDI-1080P60).zip AC-VS049...
www.acasis.com
No passthrough on most of those, so you'll need a separate splitter, but that part *can* be cheap and work well, thanks to TV's and various set-top boxes (Cable TV, Blu-Ray, etc). Pretty much all they are is a decoder chip from a TV behind the input connector, that feeds an encoder chip from a set-top box behind each output connector.