MacMini + macOS sierra will not display video on startup
I have MacMini [TopQuark]+ 2 Dell displays with macOS SIerra which starts with no display on either monitor. I can see HD folders [Sharepoints] on other macOS on same LAN - cannot open. Cursor OK - no other mouse actions.
Other LAN mac [Baryon] returns item... 'cannot be found' when opening TopQuark folder from 'Go Computer'.
Apple & progress bar are visible to startup completion - then dark screens.
Tried 3 steps here - http://osxdaily.com/2014/11/22/fix-macbook-pro-booting-black-screen/ - no go...
Tried this - https://discussions.apple.com/thread/5984310?tstart=0 - was able to logon with visible display, then after couple seconds, dark displays again.
Also tried 1 or other displays separately - no go.
Gmail incoming message popups appear on otherwise dark screen.
Other LAN mac [Baryon] returns item... 'cannot be found' when opening TopQuark folder from 'Go Computer'.
Apple & progress bar are visible to startup completion - then dark screens.
Tried 3 steps here - http://osxdaily.com/2014/11/22/fix-macbook-pro-booting-black-screen/ - no go...
Tried this - https://discussions.apple.com/thread/5984310?tstart=0 - was able to logon with visible display, then after couple seconds, dark displays again.
Also tried 1 or other displays separately - no go.
Gmail incoming message popups appear on otherwise dark screen.
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The decision was made, after several experiments, using safe and recovery modes and power cycling, we agreed that the MacMini was defective and needed to be replaced.
Needless to say, I was much pleased with Apple support - and yours!