Maybe this is an issue with Windows? Have you tried running Linux with a lightweight X11 window manager? Should be leaner on that T420 and a more forward-looki

Maybe this is an issue with Windows? Have you tried running Linux with a lightweight X11 window manager? Should be leaner on that T420 and a more forward-looking track for reviving old hardware. Are you even able to get latest Windows Update security patches for that device? Seems relevant for the use-case.