After waiting a month for my w10 notification, that never came. I went ahead and installed it. I checked Dell.com and it stated that my system(Inspiron running W8.1) was compatible with W10. Everything went ok, until the restart. I did not have internet connection, Ethernet or wireless. I uninstalled and reinstalled the realtek driver but still not working. I then, downloaded and installed the realtek driver for W10 but still no internet. When I check the status of both connections, realtek and Dell wireless. It says that there is no connectivity in IPv4 and IPv6. So, now I'm without connection and unable to activate W10. BTW, what is airplane mode? When I troubleshooted the connection W10 told me to check it and make sure it's off. However, I did not find this mode.