So I am have been scouring the internet and troubleshooting my wireless adapter for about a week now, and I still am unable to get it working.
I am unable to activate the Wi-Fi on my laptop, which is a week old Dell Inspiron 17 7000 series. The Wi-Fi key on the keyboard does not enable it. Neither does toggling the Wi-Fi switch in Network settings: I click to turn it on, and it attempts to toggle On before it reverts to the Off state. I have gone into Network Connections, which contains the icons for the Ethernet and Wi-Fi connections, and it shows that the Wi-Fi is enabled (the Icon is in color, as opposed to being greyed out when off; and right clicking it gives me the option of disabling it, so it must be enabled). Still, when I right-click and select to Connect, it does not. Selecting to Diagnose it yields a message for the following problem: "Wireless capability is turned off." But the previous courses of action are unable to turn on the wireless capability. I have also gone into Device Manager and updated the drivers, as well as disabled and re-enabled the adapter from there.
I have also gone into the command prompt, and the command netsh interface show interface displays that Wi-Fi is disconnected. I have subsequently attempted to enable Wi-Fi with the following command: netsh interface set interface Wi-Fi enabled. The output: "This network connection does not exist."
If any one can please help with troubleshooting this matter, I would forever be grateful.
This problem originated exactly one week ago. I dual-booted my Windows 10 laptop with Ubuntu 14.04. After a bit of setbacks, I was able to install Ubuntu alongside Windows 10, but I was unable to use Wi-Fi in Ubuntu, although I was able to use it in Windows. In my attempt to address the Wi-Fi issue in Ubuntu, I tried to update the kernel, but it unsuccessfully installed. Some more troubleshooting ensued, and before I knew it, Wi-Fi was not working in Windows as well. I ended up recovering the entire system so that I can reinstall Ubuntu, but Wi-Fi still is not working, even after this factory reset.
Again, I would appreciate anyone's time and help in resolving this matter.