Mac mini (mid 2011_High Sierra) restarts by itself periodically when monitor switched off only
Hi, my Mac mini (mid 2011_High Sierra) restarts by itself periodically.
I searched different sources, tried different options, including Safe mode restart, switched off everithing - the only reason I found is:
- when macmini connected to the monitor and the monitor is switched off or use different input - restarts periodically (several times a day),
- when monitor on (no sleep mode in monitor) - no problem.
Monitor connected through mini-dvi cable.
- wi-fi, safe mode, power saving settings or other options have no influence on this.
What should I do?