Okay, I haven't tested it on Windows 7 because it's discontinued, but if it's working for the most part, that's great. I think the issue is you're missing a font that comes with Windows 10. You'll have to find a place to get it from:
https://docs.microsoft.com/en-us/typography/font-list/segoe-mdl2-assets
See if this works:
https://docs.microsoft.com/en-us/windows/apps/design/style/segoe-ui-symbol-font#how-do-i-get-this-font