Hi Pat,
When you say “it didn’t work” are you saying that following the instructions for the hardware test/diagnostics failed to initiate the hardware tests (ie the hardware tests did not run) – or are you saying that they ran OK but did not indicate any problem? You may be right when you say the problem is the botched changes to the security panel – but in that case I would expect that, while the problem might prevent the computer from booting up, the hardware test should run OK. If the hardware test does not even run I would have thought it suggests other problems. But maybe you do need someone with more experience to look at it – maybe try Daniel? Just my thoughts. Please let us know how it all turns out. Cheers Neil -- Neil R. Houghton Albany, Western Australia Tel: +61 8 9841 6063 Email: n...@possumology.com From: <wamug.org.au-wamug-boun...@lists.wamug.org.au> on behalf of Patricia Scott <clamsh...@iinet.net.au> Reply-To: WAMUG <wamug@wamug.org.au> Date: Thursday, 15 August 2019 at 13:58 To: WAMUG <wamug@wamug.org.au> Subject: Re: Serious problem Hi, Neil, Thank you for this information, it’s a good thing to know. I tried it, but it didn’t work, at least for this kind of situation. I am pretty sure that the problem is the botched changes to the security panel: it has locked down the whole computer and will need the attention of a trained person. Thanks,again, Pat On 15 Aug 2019, at 1:19 pm, Neil Houghton <n...@possumology.com> wrote: Hi Pat, If it was me, I would first try and ascertain whether it was a hardware problem or just the OSX installation which had got messed up. I am assuming that you don’t have a bootable clone of the Mac that predates your problem? If you did you could just try booting up from the clone and if it was just the OSX installation which had got messed up then the Mac should boot up OK from the clone. If that was the case you could just clone the clone back to the main HD and, in effect, rewind your system to the pre-problem status. However, assuming you don’t have that option then the fact that the screen gets as far as the white Apple shows that the hardware is working on some level - but does not rule out hardware problems. Apple computers include high-level hardware test/diagnostics routines which you can run BEFORE the computer tries to load up the OS. Depending on the age of your Mac this may be called Apple Hardware Test (for pre June 2013 machines) or Apple Diagnostics (for machines introduced after June 2013). The basic procedure is the same in both cases - disconnect external device, shut down the Mac and then switch on and hold down the D key. You should first read the Apple support articles here: How to use Apple Hardware Test on your Mac https://support.apple.com/en-au/HT201257 How to use Apple Diagnostics on your Mac https://support.apple.com/en-au/HT202731 Be aware that the tests can take some time to complete – so don’t worry if it seems “stuck” for a while. If the Mac passes this test, you should probably look at reinstalling the system – but the best approach will depend on what sort of backups/clones you have. Hopefully, this should give you a much clearer picture of just where your problem lies. HTH Cheers Neil -- Neil R. Houghton Albany, Western Australia Tel: +61 8 9841 6063 Email: n...@possumology.com From: <wamug.org.au-wamug-boun...@lists.wamug.org.au> on behalf of Patricia Scott <clamsh...@iinet.net.au> Reply-To: WAMUG <wamug@wamug.org.au> Date: Thursday, 15 August 2019 at 09:58 To: WAMUG <wamug@wamug.org.au> Subject: Re: Serious problem Hi,Ronni, Thank you very much for the information. Unfortunately, it didn’t work. The same black screen with just a white Apple is all that is visible. I read all the rest of the support information, and I think the only option is to take it in to a repair shop and hope for the best. Again, many thanks, Pat On 15 Aug 2019, at 6:37 am, Ronni Brown <ro...@mac.com> wrote: Hello Pat, You could try: Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. You can release the keys after about 20 seconds, during which your Mac might appear to restart. https://support.apple.com/en-us/HT204063 Kind Regards, Ronni Ronni Brown’s iPad Pro 12.9-inch 256GB On 14 Aug 2019, at 3:56 pm, Patricia Scott <clamsh...@iinet.net.au> wrote: I have a Wacom pen tablet. Yesterday a message came up on the computer that the firmware for the tablet needed to be updated because in the new Mojave update Apple neglected to classify Wacom as safe software, and it was necessary for users to modify items in the Security Preferences panel. So I read the instructions and followed them (I thought). Unfortunately, I think I omitted a step and then tried boot the computer. The result was that the monitor now shows only the white Apple and the stalled progress bar. I did a Safe boot, but it didn’t work. I hope the really savvy members might know how this can be remedied. Pat -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> -- The WA Macintosh User Group Mailing List -- Archives - Guidelines - Settings & Unsubscribe - -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> -- The WA Macintosh User Group Mailing List -- Archives - Guidelines - Settings & Unsubscribe -
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