The SDK and DCM you've installed are really old - is there a reason for that? You can get the latest from here: Download Intel® RealSense™ Depth Camera Manager, Previous Intel® RealSense™ Install Software | Intel® Software [the most recent SDK doesn't support the R200 so get 2016R2]
Also you'll need to restart your PC after installing the SDK for the Path variable to be set.
This message was posted on behalf of Intel Corporation
Thanks for reaching out!
I noticed that you are using an outdated version of the SDK and DCM. So, my first suggestion is that you use the latest versions of each available to the R200, you can find them here:
Uninstall the previous versions, install them both, try again and let me know how it goes.