I have the same issue since the upgrade of Windows 10. I also have a Asus N551JQ notebook with built-in realsense 3D camera. Already tried everything. But at the begin of the Intel DCM and SDK software I get the error its not detected or able to validate it is a Intel product.
I self think its beceause software that I am missing. But don't know what. I had this issue already a couple of times before with windows 8.
At the begin when I did my upgrade it worked fine. But windows update crashed so I re-installed everything.
Hope you can help me!
At this point I would recommend first to check if the drivers are properly loaded, you can check that in the device manager of access the following link:
Also, I recommend reinstalling the drivers, I know that you have done this already but I suggest restarting your system every time you install a driver for proper installation.
Based on the ASUS model you provided you can download the drivers from the ASUS website.
I strongly recommend installing the ATKPackage showing at the ASUS website to avoid any compatibility issues.
After all that is done please reinstall the Intel® RealSense™ Depth Camera Manager.