I had some problems after installing High Sierra a few months ago and I believe that Apple is inadvertently damaging computers which it says are compatible to it’s new systems but is not. I tried everything from replacing CR 2032 battery, to changing my graphics card, to pushing all sorts of button combinations, testing my Power supply - it was working fine, to taking out the CR2032 and letting the computer sit without power for 48 hours( which has worked for me before on earlier towers and MacBookPro, lately.Īs a last resort I put in a Windows 10 hard drive( having seen a couple of Mac Book Pros using Windows 10) and I am happy to report my Mac is working perfectly. After installing Mac Mojave my computer kept restarting then not starting.
I have a Mac Pro tower mid 2011, Xeon two quad cores.
Now reboots often on return from sleep and boots 2-3 times on fresh start from shutdown before eventually reaching log-in screen
#REASON 12 MAC INSTALL#
I did have one of my two 2TB Seagate FireCuda go bad a few months ago - maxing out its bad sectors allocation - so I replaced it with a Samsung EVO SSD 1TB - which I was used first as the primary boot drive - but when this rebooting behaviour began - subsequently trying to isolate causes I have created a Fusion Drive out of the 1TB SSD and the other Seagate 2TB HD - with a fresh install of 10.13.6 I cannot identify what change may have triggered these rebooting cycles, apart from some incremental updates from Apple, as I've been running High Sierra on this machine for a long time now without other problems. On my maxed out Macmini mid 2011 i7 2.7 GHz I also have this problem its only manifest itself in the last 6-8 weeks or so
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