Found installation of the OS on the brick would hang with a 32GB SD card, reformatting the card and creating a 4GB partition fixed this issue for me. It's easy to create the partition using the Disk Management utility on Windows.
I found to pair the EV3 with my Win 10 PC I had to go into the search/pair part of the menu on the EV3 brick (where it could then see my PC) before attempting to add a bluetooth device on my PC for the EV3 brick to show up in the list generated through the add a bluetooth device option on my PC.