I know it is a recurring subject, but every thread I've found says to reset or do some trick with the OS to get it solved...
My Nexus 5's Wi-Fi hardware seems to be off (or non-existent). I took some screenshots, which I include here.
1. The "Settings" screenshot shows the "gray-shaded" Wi-FI button;
2. The "Status" screenshot shows that there is no Wi-Fi MAC address available;
3. The "INFO" screenshot was taken from dialing << *#*#4636#*#* >> (wifi status testing) and shows that Wi-Fi is not recognized
The thing here is that this is my second Nexus 5. The first one had the same error and Google replaced me with this one. First time, it took less than 1 month to the error to show up. This time, it took more than 1 month.
If you guys could at least identify this as a hardware or software issue, I would appreciate very much.