Boot Camp from USB 3.0, Install Windows 10

Boot Camp stuck

1 - As I am trying to install Windows 10 through a USB 3.0, MacBook Pro El Capitan 64-bit EFI. Downloaded 64-bit ISO from Microsoft. Started Boot Camp. Checked all 3 boxes in Boot Camp. Selected Windows 10 ISO.

NOTE: Strange thing though. I had to watch carefully after selecting CHOOSE, selecting W10 ISO, and deleting open. It would actually select the next ISO file in the folder. Had to move the W10 ISO to its own folder.)

2 - Boot Camp created the W10 ISO on USB 3 32gb SanDisk drive Fat32. Next downloaded support files and installed updated files on the MacBook Pro. (Wish the software prompt would have told me EXACTLY what was being loaded that I had to enter my password 2 times??

3 - Boot Camp also brought up the screen to partition the Boot Camp hard drive and presumably create a Bootable Boot Camp partition. Again wish the software prompted EXACTLY what it was doing?? Perhaps installing Start up preferences and creating a Fat32 partition with either MBR or hybrid GPT/MBR??

MacBook Pro rebooted. Stuck on boot up screen with Apple Logo. Let it run overnight. Still there. Plugged in Ethernet to change from wireless (hopefully the time capsule 2.4 and not the 5.0 since 2.4 is the default.)

"This window never opens and the installation is frozen."

Before starting Boot Camp Assistant (BCA), tried to boot directly from Microsoft OEM 64-bit W10 Optical Disk on start up (Option key). Also tried to boot directly from Microsoft Retail 64-bit W10 flash drive. Start up manager would not recognize either one. Created on a USB 2.0 16gb flash drive Fat32 MBR as well as on the USB 3.0 32gb flash drive Fat32 MBR. Copied ISO to flash drive then tired them using Boot Camp. None would show up in Boot Manage. However, all show up in Finder and Disk Utility and all are ejectable.

Please where do I go from here? Please answer if you have had the same issues and how you solved it.