Hi, I wouldn't rule out the router since it may simply need to be updated to the latest firmware to enable it to handle the newer Windows 10 drivers and chipsets.   What brand / model of router are you connecting to?  When is the last time you updated the firmware on that router?   (Are the other systems also running Win10, and if so, what wireless cards are in the system?) Oh, and have you tried that system on a different network, such as a coffee shop?  Any problems connecting there? Another thing you might want to check is updating the driver from our main Dell support site.  (input your service tag and the pages will redirect you to the support pages for your system. Click on Drivers & Downloads, and then set the OS option to Windows 10.  Check under the networking category) What wireless card do you have in your system?  I believe there are options for various cards on the Inspiron 11 currently, so I want to make sure I am discussing the correct card. Looking at the downloads page for your model there are several new wireless network card drivers available, most of which came out in the past week or so.  With the recent release of Windows 10 your system might now have the newest driver on it's image so updating it may help.  New drivers for Win10 will be released as new issues are discovered and resolved, so hopefully one of the new drivers will help you as well. Let me know if updating your driver helps, or when the last time is that you updated the firmware on your system.
I just bought a new Inspiron 11 3000 Series Dell 2 in 1 and I cannot connect to wifi. It connects but says I have limited wifi. It's not my router because all of our other devices are connecting to the Internet properly. Is Windows 10 having problems with wifi and what should I do to get full connectivity. Thank you.
Windows 10 limited Wifi