Inspiron 5500 Windows hello login issues

I bought an Inspiron 5500 from QVC in May It's the higher end one with AMD Radeon R5 with 4GB of dedicated video memory, Intel Core I7 and 16GB of RAM.  I setup Windows Hello with the Intel RealSense webcam.  When I reboot it it will usually work once but not lately but especially waking it from sleep I see the "Getting Ready" prompt with the symbol that indicates it's supposedly getting ready to turn on the camera but I've been getting the message "Camera not available" and to use my alternate login method in my case 4 digit PIN.  Once or twice I would get "Could not turn on the camera"  I would say it's the camera but why does it work on a restart?  I have the latest BIOS and the Dell Update utility automatically installs prompts for restarts when necessary.  Anyone else have this?