Configuring Mini-PC's With Zero Auto Updates On Which Windows?

Hello, I have some mini-PC problems, it started when Windows 10 kept pushing updates to flood my 32gb hard drives to a mere 100 mb's in my Asus VivoSticks TS10 making them inoperable. I had to keep deleting updates everyday and could not shut down the automatic updates in the policies no matter what I did.

The same thing happened with Windows 11 in my AceMagician T8 Pro (albeit it has a 256 gb sized drive, so size wasn't the issue there) but I was able to shutdown many update functions in many policies and directories, yet it still says its updating, but only during boot up. I'm trying to figure out how to shutdown all updates forever.

Frustrated, I wiped these drives on both mini-PC's and formatted to EXT4 with a Linux install. I've learned to hate Linux, its far too complicated to deal with and I don't want to waste days-on-end in the shell and I don't know code to play around in it. Linux was a dead exploration.

So now I want to go back to Windows for both mini-PC's but downscaling to a Windows 7 or Vista or XP where I can affectively shutdown the automatic updates features for real and not have it run secretly in the background without alerting the user. A real and permanent update shutdown.

I'm told by various people that Windows 7 is the last Windows op system where you can shutdown automatic updates for real and its not a fake shutoff. I'm wondering how true this is and what your input is? And if there will be a driver issue in downscaling to Win 7 or Vista for these particular PC's?

Now before 'some' start jumping-up-and-down shouting that shutting down automatic updates is wrong to do and you don't want to do that and blah, blah, blah. I've heard that all before, but I have my strong reasons to never update anything I own and I don't, and I've never had a problem doing so in 15+ years.

Lastly, I use these mini-PC's to run just 1 program - Think or Swim stock trading platform on TD Ameritrade/Charles Schwab. I do not use these PC's for any web browsing, photos, music, not even office like Word, Excel, any chat messengers or anything. These PC's will have no other programs loaded into it besides Think or Swim and never used for anything else. They are as barebones as you can get, only the default installed programs from the Windows disc. I use an iMac as my daily workhorse, I don't need to use these PC's for that.

So the update issue whether some think is good or bad is irrelevant. So with all that being said, my question is what Windows platform can I completely shutdown the automatic updates? Can a Dell reinstall disk do this with no product key code or a reusable key code for multiple machines? And I'm told that all the drivers for Windows 7 are the exact same file as used in Windows 10 so is that true as well? Thank you.

Other than security updates, the rest seems to be able to be disabled.

Then it must have been the security updates which kept flooding up my hard drive space. Every morning I had to delete updates and try to create some space so that the drive could work. It has gotten so ridiculous that I had 100 mb's of room to try and get the drive unfrozen.

My only solution here is to downscale from Win 10 and 11 because I'm told that it is impossible to shutdown all automatic updates no matter if its security or whatever. Would that be true? And is it true that Win 7 is the "only" op system that can shutdown all auto updates "for real" nothing running in the background hiding from the user?

I get all kinds of conflicting advice. Some users say that it is 100% true that you can NOT turn off Windows automatic updates completely while others say that you CAN completely turn them off. From my own observations I believe you can NOT because I have been through every policy, directory and subdirectory path, etc.