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My iPhone is blinking and my computer won't start.

My iphone 10 started blinking then went black Sunday, ive had no cell phone since. Apple tech attempted to help me and wanted me to update Catalina, well in that process... the desktop Mac crashed and nonlonger works. I spoke with several levels of Apple folks. They suggested it could be spectrum. I had to levels of spectrum techs come out and they say it’s all good.... on their devices. Ours still read downladn100ish and upload 20.
Apple is saying I need to erase and upload from hard drive. But not to do it as long as it’s slow speed and poor service. And I can’t backup phone and reload until that is done.

In the meantime my moms been admitted to hospital and I just moved parents to Charlotte. So I’m needing my phone desperately. As my husband needs his desk top for work, desperately. 
I know originally I was going to conf call you. But since I’ve spent so much time on phone with apple at this point...
What would you recommend would be the fastest remedy.

Btw, when we try to update Mac, it freezes. We power off and on, if goes to login and freezes.  Time after time. 

Sounds like there are different issues going on here. Your phone was having issues and Apple wanted you to restore/update the phone using the computer maybe but in the meantime they discovered that you were behind on your computer operating system. Then in the process of trying to update your computer, its issues have expounded.

Not exactly sure what you’ve discussed with Apple but here’s my guess. Your phone “blinking” is most likely a hardware problem that will not be fixed by updating the phone. If the phone screen is “blinking” then that is most likely a physical issue with the screen. Updating or restoring it would not solve that.

Restoring a phone. (If you did actually want to) There are two ways to restore a phone.
1. Via a computer.
a. In macOS Catalina 10.15 the restore happens in the Finder window.
b. In all operating systems prior to 10.15, the restore happens in iTunes aka: Music.

2. Restoring via a reset from the phone itself.

If the phone was not responsive then it would make sense that Apple would have you try to connect the phone to the computer to try to restore it, thus starting you down the path of updating the computer. I doubt however that would have even solved the issue. I would need more info like does the phone actually turn on? Does the screen respond or even light up at all? That sort of info.

Secondly, the computer issue. I don’t recall what year you may have mentioned your computer was but as we had discussed last week, it was hard to isolate whether your speed issue was the fault of internet or the computer itself. After you mentioned you feel your internet is ok, that puts us in the direction of computer. Hard drives, especially iMac 2015 and earlier hard drives, are simply prone to failure. SATA drives are spinning drives that often give out due to the fact that they never stop spinning. Since it’s a moving part, they are more likely to break over time. Drives often fail when updating an operating system since that is when it’s being asked to do even more than usual. Common characteristics of a failing hard drive are as follow:

computer slow to boot
slow to open folders when looking inside documents folder, applications, music, etc…
spinning wheel and no response to force quit
boots to black screen
boots to icon of folder with an exclamation point

None of those are related to internet. Not being able to actually touch your devices puts my diagnosis at a disadvantage. Sort of like a dr trying to tell a patient what they have from the sound of their voice over the phone. I may be completely wrong.

You may have an automatic backup of your phone in iCloud. Most people have iCloud backup turned on these days.
You may also have a backup drive backing your computer up. Always a good idea to have a external drive that Time Machine (the automatic backup software on your computer) uses to keep your internal hard drive data safe.

I’m sorry I can’t be more specific. I’m really just throwing darts here.
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