![]() Learn what to do if your computer restarts or shuts down unexpectedly, or you get a message that your computer restarted or shut down because of a problem. Is there an error dialog when shutting down periodically.(?) I learned that the previous shutdown code was 0 in every case, for which, guided by a troubleshooting website, I reset SMC, after which the problem seems to have persisted. Also, Diagnostics found no issues (code ADP000).ĭoes this sound for sure like it needs a new power supply? Or might an EntreCheck report reveal another potential cause? My iMac (Retina 5K, 27-inch, 2017) recently started periodically shutting down.īy typing the following into Terminal: log show -predicate 'eventMessage contains "Previous shutdown cause"' -last 1h Please tell me there’s a standard warranty if this thing is broken already? Going to get it checked out at the store in a couple of days but I really need it for work so anyone who’s experienced this and has a solution, any help would be amazing.Īnd of course I didn’t buy AppleCare. I’ve already checked the socket with other devices so it can’t be the actual wall outlet - so it must be some sort of software or OS bug right? Surely the Mac can’t have a failing power supply already? It’s only a couple of months old. Even then, it only lasts for a couple minutes - and sometimes not even making it past the login screen! The only way I can get it back on is to take the plug out and plug it back in. Until today, where it shut down unexpectedly and then wouldn’t power back on. ![]() IMac Repeatedly Shutting Off (27 inch 2020 5K) Hi,Ī few times since I got the machine, it’s just shut down without any explanation (including the first day I got it!) it always booted back up afterwards so I didn’t think anything of it - and it didn’t happen for months.
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