Windows 8.1: WiFi dropping and/or "Limited"

I initially got this issue when upgrading my Dell Latitude D630 from Win 8.0 to Win 8.1. My vanilla Intel Wifi card unexpectedly became unsupported. I bought a new Wifi card Intel AC-7260 and Asus AC router. The D630 became really unstable - while all other units on my home Wifi were all OK - 4 Windows PCs, 2 Macbooks, 3 iPhones, 1 Samsung, 2 iPads and 2 Playstations. Hard to say it's the home network... I tried every trick helpfully mentioned here without luck. 

BUT one day my D630 Wifi became 100% stable - when I reverted to a very specific Intel Wireless driver version (think it was 17.0.0.23). This can be the total combination of circumstances as well as the Intel driver - I tried a lot of settings and tricks. When stable, I did NOT fiddle with it at all... Before that, I also experienced long periods of stability (3-4 weeks) when returning home after connecting my D630 to another Wifi network. Strange but true.

100% stable and fine for a couple of years - until I not long ago upgraded to Win 10. This annoying unstability problem returned. Now, I can't find back to that specific Intel driver version, that seemed to do the trick :-( When I reverted back to Win 8.1 it became stable again.

BUT: What I now experience, is that as long as I stream music with Spotify, the Wifi connection is stable and functions well for other purposes! 

I'm sure there is a logical explanation for it, but I'm all fed up of this now, so I continue streaming music in order to stay connected. Occasionally I'm cursing over whatever Microsoft / Intel has done with the IP stack, that introduced this buggy feature in the OS, that falsely detects a connectivity problem and shuts the whole connection down. To me, the explanation must be some bad MS decision that neglected the good old KISS engineering principle...

I just purchased a Netgear 600 router.  Every device I have easily connects to the internet through it.  Wired ethernet connection also worked fine, but could not connect wirelessly with my Inspiron 15 without "limited connectivity" and no internet connection.  I have older routers that worked fine with the Inspiron 15, but I had encountered other routers I could not connect wirelessly through, but rarely.  I went through all of the online recommendations and tried all of the standard solutions: I had the device manager check the driver for the latest version (said it was the latest, turned out it wasn't!).  Eliminated turning off wireless for power management.  Changed IP addresses.  Ran all of the netsh command options to reset and eliminate tcp/ip autotuning.  Nothing worked.  Then it occurred to me that the device driver checker for the wlan driver in this machine might not actually know the latest version driver available.  I searched for a newer Dell 1705 wlan and bluetooth driver and found it online.  The old version was 10.0.0.222, the new version I found is 10.0.0.276.  I downloaded and installed it, and the Inspiron is connecting to the Netgear N600 with no problem.  I haven't seen anyone else post this solution.  I probably had 8 hours into it before I finally got it fixed.  Hope this helps someone out there!

try to uninstall the driver from device manager 

and restart the PC 

please find the details in this link 

https://youtu.be/6JK5y41UWN0

Ready to scream? I know its old post, only one i could find tho on this issue, but i got your solution. 

Step 1 open device manager

Step 2 disable (not uninstall) WiFi adapter

Step 3 enable WiFi adapter

Fixed