Hi Rosemary,

It’s really hard to understand what the problem is that you are trying to 
resolve. 

I think you are telling us that you now think your computer is okay, but you 
think you have a problem with Time Machine. 
You’ve told us that your time machine disk is supporting three computers. 

What about buying a new back up disk just for the computer that you weren’t 
having problems with but were using when you were having problems with Time 
Machine. 

Then connect the new disk to just that computer, let the backup process look 
after itself and move on with life. I don’t know anything about how Time 
Machine works on multiple computers to make any comments on what to do with the 
backups for the other two computers, but it at least will progress your problem 
solving. 

Regards

Tim

> On 9 Jun 2021, at 7:40 pm, Rosemary Spark <arkaysp...@gmail.com> wrote:
> 
> Hi 
> Disk utility can’t find the Time Machine.
> 
> Cheers
> Rosemary 
> 
> On Sat, 5 Jun 2021 at 01:15, Stephen Chape <chap...@bigpond.com 
> <mailto:chap...@bigpond.com>> wrote:
> Hi Rosemary.
> 
> If this was me, I would use Disk Utility to Erase my Time Machine backup.
> Then start from scratch.
> 
> But that depends on if you are happy to lose that data.
> 
> 
>> On 4 Jun 2021, at 11:30 am, Tim Law <t...@peoplehelp.com.au 
>> <mailto:t...@peoplehelp.com.au>> wrote:
>> 
>> I believe you’re asking for help To deal with the problem of the computer 
>> shutting down. 
>> 
>> We’re trying to help you with the next step. 
>> 
>> 
>> 
>> Tim Law
>> 
>>> On 4 Jun 2021, at 10:57 am, Rosemary Spark <arkaysp...@gmail.com 
>>> <mailto:arkaysp...@gmail.com>> wrote:
>>> 
>>> 
>>> Hi,
>>> Not sure what you mean. What is was doing was shutting down and re-starting 
>>> by itself. 
>>> One complication is that the time machine is backing up 3 computers.
>>> Cheers
>>> 
>>> Rosemary Spark
>>> PO Box 781
>>> South Fremantle WA 6162 Australia
>>> Phone: + 61 ‭8 6397 6822‬
>>> Mobile: 0414268043
>>> 
>>> 
>>> 
>>> 
>>> On Fri, 4 Jun 2021 at 10:12, Tim Law <t...@peoplehelp.com.au 
>>> <mailto:t...@peoplehelp.com.au>> wrote:
>>> Disconnect your time machine and protect it from fiddling and temptation
>>> 
>>> It is your rescue line and might be your only connection to your former 
>>> life.  
>>> 
>>> Focus on getting the computer going. Does it restart if you hold the shift 
>>> key down?
>>> 
>>> Tim Law
>>> 
>>>> On 4 Jun 2021, at 9:46 am, Rosemary Spark <arkaysp...@gmail.com 
>>>> <mailto:arkaysp...@gmail.com>> wrote:
>>>> 
>>>> 
>>>> OK. My computer kept re-starting. Very annoying
>>>> Finally got to testing.
>>>> Turned off Time Machine as someone suggested...now no re-starting.
>>>> Now what do I do?
>>>> If the files are corrupt, how do I fix? Do I delete the whole backup? if 
>>>> so, how?
>>>> 
>>>> MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports)
>>>> Big Sur 11.4
>>>> 
>>>> Cheers
>>>> 
>>>> Rosemary Spark
>>>> PO Box 781
>>>> South Fremantle WA 6162 Australia
>>>> Phone: + 61 ‭8 6397 6822‬
>>>> Mobile: 0414268043
>>>> 
>>>> 
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> 
> 
> Regards
> Stephen Chape
> 
> Mac by choice
> Windows because my employer knew no better
> 
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