Harry,

I have Windows 8.1 Pro, but updated the BootCamp to the latest version from the Apple website...just booting up now in OS X to get the version number. It was BootCamp 5 with the 31 January 2014 date for the folders. There was an update from the BootCamp that came with my 2011 MacBook Pro, and it something like 5.1xxxxx. https://support.apple.com/kb/DL1720?locale=en_US

I never had a black screen, until the initial start up just before the Windows 8.1 logo comes on screen. I had everything unplugged at the install, only added stuff after completed.

Hope this helps
Mike