HI, So I got my Dell inspiron 3148 recently. Everything was fine until I upgraded to Win 10. I was presented with the same issues like everyone - Wifi connection unstable. I did try a lot of options/suggestion available out there, none worked for me.  But I  did notice a pattern - everyone was pointing to the faulty drivers. So I decided to remove the Dell Wireless 1708 WiFi driver and installed the Win 10 bundled driver - Broadcom 6.30.223.256 which seems to solve the problem for me. No more drop connection or erratic speeds. 
I recently factory reseted my Dell Inspiron 13 7347 and upgraded it instantly to Windows 10 Build 10240. After tweaking my security settings on my laptop, I found that my wireless connection was very unstable. On my device, I have a Dell Wireless 1708 802.11b/g/n (2.4GHz). [URL]#0 On IMAGE 2, I currently connected to my home connection (my connection and other connections are shown on the available connections list)On IMAGE 4, I am suddenly disconnected from my network and only my home connection shows on the available connections list.On IMAGE 3, I try to reconnect to my connection however it changes to IMAGE 5 and labels as not connected and no connections are available and shown-IMAGE 1.No fix from disabling and enabling my adapter works.On IMAGE 5, I troubleshoot problems on my connection and it fixes it, but this problem occurs many times when I am either using or not using the internet. It especially disconnects often when I am loading two or more tabs at once or using a heavy usage of internet. Is there any fix to my problem? From device manager, I uninstalled it and restarted but that didn't fix it.Also, I downloaded driver [Dell Wireless 1708 WiFi + Bluetooth Driver] but it only updated my bluebooth, not the wifi adapter. Please help.
Dell Wireless 1708 Wifi Issues: Keeps Disconnecting