Have you checked to see if the computer is Win 10 compatible ?
Maybe check this Dell Site out >
Hi guys, recently, i upgraded my Dell Inspiron 15-3521 from Windows 7 to Windows 10.. I did a complete install, with both my partitions formated and so.. All good, till i tried to use Wi-Fi on it.. Nothing would work.. I downloaded the only driver that installed succesfully.. Didn't worked. I updated the driver from Device Manager.. That also didn't worked.. What can i do next?