complete shut down after no use for half hour or several hours. Cant restart without removing power supply completely. Ive checked settings but this seems like a major bug in this thing. Never ever had a Mac with this habit.
Try resetting the SMC
How to reset the System Management Controller (SMC) on your Mac - Apple Support
Try resetting the SMC
How to reset the System Management Controller (SMC) on your Mac - Apple Support
Hopefully this works--sounds sensible. Is it like 'zapping the pram' in the old days?
I'll let you know if this thing goes to sleep before I do tonite.
Many thanks.
new iMac (6/19) shuts down
