I had Windows on a Lenovo laptop, and Windows update installed and/or re-enabled Lenovo system services almost every time (those included things like popups helpfully telling you that you pressed CapsLock and crap like this). I ran debloating scripts, tried fiddling with policies, etc, but Windows Update would inevitably bring those services back.
Another thing is Intel drivers. There's official Intel driver assistant software which installs latest drivers for Intel things (graphics, network, and so on). Only for Windows to re-install their "stable" outdated graphics driver next time it sees it. Again, I couldn't stop it. How hard is it for Windows to see that the driver already installed is newer already? Why even Intel cannot talk to Microsoft and decide between themselves a solution for this?
This is guaranteed just to be windows reinstalling drivers it thinks the laptop needs by default for basica functionality (it is considering the Lenovo service a standard system driver like the Intel ones since sometimes those are used to enable custom key and other functionality, so it makes sense to be a default driver so everything works out of the box for non technical customers). This is easily disabled by simply setting group policy manager to not automatically install drivers.
I’ll happily shit on windows endlessly but I can’t fault them for this, I think with the windows driver model this makes sense, otherwise you’re gonna have a ton of issues cropping up for normal users, especially since power users can always disable the policy. That was always one of the first policies I set and it never gave me any issues or automatically reinstalled unwanted/standard drivers again.
Another thing is Intel drivers. There's official Intel driver assistant software which installs latest drivers for Intel things (graphics, network, and so on). Only for Windows to re-install their "stable" outdated graphics driver next time it sees it. Again, I couldn't stop it. How hard is it for Windows to see that the driver already installed is newer already? Why even Intel cannot talk to Microsoft and decide between themselves a solution for this?