Stuck on "Turning Wi-Fi on..." topic

I've been having this issue for a week now. At first, it got disconnected from my wifi router. Then I tried to go to the wi-fi settings only to find that the turn off/on has been greyed out. Thinking it is a software bug and that the issue can be solved by a mere factory reset, I did a factory reset only to find that I would be stuck on this " Turning Wi-Fi on..". With that I cannot continue the setup. After which I downloaded the Nexus 7 2013 jellybean factory image (the original stock rom) then flashed it, but still the issue was not solved. By the way I purchased this tabled way back December of 2013 and I have not rooted this device. Hope someone can help me or can give me an advise on how to fix this tablet. Honestly, this is a very good tablet.