Regarding the solution to this problem, I can only find two ways to update iTunes and use DFU mode. I don't know if they really can solve the problem that iDevice can't be restored in recovery mode, which is a bit doubtful.
I found the way to use the control panel in the search results, and it really helped me fix iTunes can't uninstall. Very simple operation:
Click Start > Type Control Panel > Control Panel > Programs and Features > Find iTunes and Uninstall it > Uninstall these four sections: