Mac mini not starting up


hi, wondering if can following.

noticed update high sierra decided install on 2014 mac mini.

decided install got stuck on installation process on hour no change , screen distorted had encountered problem decided restart it.

when switch on comes following message ‘your computer restarted because of problem. press key or wait few seconds continue starting up’

apple logo shows following text (see attachment)

repeats few times , switches off.

have bluetooth keyboard attached think isn’t allowing me safe mode not sure how fix it.

can help?
 

attached files:

install macos again usb stick or via netinstall.
 


Forums Macs Desktops Mac mini


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