I have a Dell venue 8 7840 tablet which I purchased a week ago. I am not able to connect my tablet with my home WiFi network and it everytime says "saved'. I am not even getting the option of '"forget'. I have even tried doing factory reset but of no use. Surprisingly all my other devices are getting connected with the same network without any problems. Also, other WiFi networks are showing up in my tablet correctly and also getting connected. I got 5.1 upgrade of the tablet immediately on first boot. Please suggest solution.