![]() ![]() Finally tried a PRAM and SMC reset, in addition to a virus scan, which also came back as clean. ![]() I also tried to install the Combo version of the High Sierra, but this also either did not help or update the computer. I also used my original start up disk and ran the extended Apple Hardware Test, and after an hour and half, it came back as okay as well. I then booted into Recovery Mode and ran Disk Utility and ran First Aid on all my volumes and everything came back ok. I noticed that the Security Update 2019-002 10.13.6 was available so I tried to do the update thinking that this might help, and although it would go through the motions of downloading and restarting, the Mac was still in 10.13.4 with the update still in the 'Updates Available' area of the app store. In Console I kept getting the continual message "The connection to service named was invalidated". I checked in Activity Monitor and 'secd' and 'lsd' both took up over 120% of the CPU. Going into Safe mode however and the Mac seemed to be fine. The problem got quickly worse so that every time it would come back up, it would crash after a few minutes. I noticed the problem about a month ago when I would be in normal mode and the computer would crash after attempting to do two things at once, like have the internet open, then open a random app.the pizza wheel would spin and I'd have to press the power button to bring it back up. I have a MacPro Mid 2010 5,1 running 10.13.4, Boot ROM version 00. ![]()
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