dell m5110

Respected,
I'm a big fan of Dell PC and Laptop. But I have a problem with the Dell M5110 ser.tag .
When you install Windows 7 and upgrade drivers from your site, everything works flawlessly.
But when you install Windows 8.1, which is licensed, everything works or WIFI was always limited.
I tried to upgrade my Windows 10 but even then Wifi does not work. All the other drivers working flawlessly.
I hope that you will understand the seriousness of my problem, and in accordance with my abilities take action to resolve it.
Sincerely hoping that you will meet my expectations.
Because I have a Dell For years and up to now I was Respected,
I'm a big fan of Dell PC and Laptop. But I have a problem with the Dell M5110 ser.tag . When you install Windows 7 and upgrade drivers from your site, everything works flawlessly. But when you install Windows 8.1, which is licensed, everything works or WIFI was always limited. I tried to upgrade my Windows 10 but even then Wifi does not work. All the other drivers working flawlessly.
Otherwise, I have 64 years