I did not make any recent changes in the past month to my computer and have maintained fairly normal usage.
Before I go through your list of methods, I should elaborate a little more on the issue: my full-screen start menu lost its color and turned grey along with the icons, and my main monitor no longer displays its unique background, instead copying my secondary
dual-screen monitor's background; in addition to all aforementioned issues. All issues started happening simultaneously; except the start menu losing its color, which happened just a short while later.
To make absolutely sure nothing was skipped, I'll repeat any methods you list that I may have already performed.
Method 1: Failed
I completed all the commands. I actually briefly got stuck at 9% on sfc /scannow but I was able to resolve that by closing and reopening admin-level Command Prompt, and then doing the DISM commands first before doing the sfc /scannow command. But yes, opening
Settings and then going to System still recreates my described issue.
Method 2: Failed
Another bit of context that might have been helpful for me to mention: this is a bootcamped Mac Mini 2020 (non-M1) computer running Windows 10 Home. Subsequently, I chose to not disable Apple programs I thought might be important to leave on and because
I trust Apple to not be the root cause.
Also, this computer is connected to an eGPU by Razer, containing a Vega 64 graphics card, meaning I will be leaving on their Radeon Settings Host Service to ensure the graphics work. These are the only things not disabled. Specific list of things not disabled:
Radeon Settings: Host Service, iTunesHelper, iCloud Status Window, iCloud Shared Albums, iCloud Photos, iCloud Internet Explorer Bookmarks, iCloud Drive, and Boot Camp Manager (mission critical to this computer's functionality).
Method 3: Failed
Now this one I actually did choose not to repeat since you said that's fine, as it was a little tedious the first time. But yes, I did create an additional admin-level account and test if this issues persists on said account, which it does.
Important Note: AMD graphics may be culprit somehow
I have strong suspicion there is an issue related to my eGPU, Vega 64 graphics card, AMD Radeon drivers/software, or their relationship with bootcamp. If you have ever used an eGPU with a Mac Mini in a bootcamp Windows 10 environment, you would be surprised
how finnicky it can sometimes be to get everything working and displaying properly; things as seemingly random as putting the Thunderbolt 3 into the farthest-left Thunderbolt 3 hole instead of a different one can be the deciding factor in if the eGPU works.
While restarting and reconnecting my HDMI cords to different holes, I noticed something. While I could not get both displays functioning correctly without an additional restart, I was able to access a fully function System Settings area while just 1 display
was running while directly connected to my Mac Mini -not connected to the graphics card.
Advice on how to proceed is welcome, but online advice has been finnicky and numerous yet unreliable for me when handling this specific setup.
Edit: I just did a clean uninstall of the garbage Radeon software AMD requires you to use with their graphics card, and that caused the System Settings to work again. This was on a stable release of their software, not a cutting-edge one, so I am very disappointed
in them.
Thank you for your help and time initially. Go ahead and mark this issue as solved; and maybe tell AMD their software is breaking your operating system.