just zapped the parameter ram....no bueno...

public beta tester here, with same problem..my 2014 mac mini went to download the latest version and screen has been black for several hours now...i hope it's temporary, as i just bought this kit a couple months ago...i can't abide a brick...i can't get to the desktop to do any of the issue resolving methods, below.. late 2014 i7 3.0 GHz 16 gigs ram