Latitude ST Tablet WiFi doesn't work after upgrading to Windows 8, nor 10

Hi all, I got this little tablet which natively runs win7 oa with an asus win7 mangled onto it. wifi worked though. But as i'd rather run win 8 or 10 i upgraded, no wifi on either windows 8 or 10. i looked in various threads and tried various drivers offered there, no luck. if someone could help it would be greatly appreciated. or even a link to the original oa win7 i have the key for. Thanks!