What is the exact nature of the Internet issue? Have you installed the Wi-Fi drivers and the chipset drivers after the Windows 10 installation? Did you clean install Windows 10? Keep in mind that Dell states on the support page that your system does not support Windows 10, which means that Dell does not supply Windows 10 drivers even though Windows 10 should work on the N4050. You will have to source the drivers yourself at such sites as Realtek or Intel.
I have upgraded my pc(Inspiron 14 N4050) with SSD & windows 10, but now i am facing a internet issue. Could anyone suggest me here  
network issue