RZ Boot Helper won’t run

Hello all,
I am trying to install Debian OS on eMMC. RKDevTool is detected MASKROM device however, it comes up with Download Boot Fail. I tried RZ USB Boot Hlper and it wont detect the device as shown below. I am not using an microSD or a HDMI output to see what is going on on the screen. When I did plug in HDMI output, the screen is blank. So none of the troubleshooting guide can be used.

By the way I am using Windows 10 OS.