Walked over to the Office Depot store, and picked up a pack of 16g thumb drives.
Now downloading MacOS Ventura.
Going to make a boot drive with install files.
Following a vid on how to do it.
If all else fails, I've got my old mac that I can recover from. But it has the old garbage on it, that I'd prefer to avoid loading on this one.
You should also make yourself a LINUX bootable USB stick. Having one of those (and a bootable CD before that) has saved my bacon many a time.
With a Linux stick you'll be able to access almost all the files on the same drive(s) that isn't working for you with Windows. The files should all be there, and you'll be able to save the one's you are working with but haven't backed up--as you should have--and possibly move those files to another PC which is working properly...and keep going.
I got phished one night, realized it immediately and shut down my PC. I knew it was infected, and I was wary of the fact that turning it on again and doing something ELSE stupid, such as logging into my bank accounts might cost me a lot of money as well as a lot of time. Went to the bank and closed one account, opened up a separate account I now use only to transfer funds into the day-to-day account, and I have, since then kept the exposure to this last account as small as I can. So far, so good.
But it took me months to get things set up this way, and I needed to access the PC without causing one of those:
"Greetings! Send $5K to this Bitcoin wallet in the next twenty four hours or I will encrypt every file on your PC. It will cost you $10K for the decryption key after 24 hours...etc.
Oh...and have a nice day!"
....popups where your login entry would normally be*
[* some dirt-cheap or even free keyloggers are sophisticated enough now that the dark forces can snag your Windows login password too].
With a Linux stick, you won't ever need to login at all--just run off the stick. Granted, I don't set up or access email off the stick, but just use the browser and installed apps like Libre Office. Usually enough.
I personally like Linux Mint. FWIW.