Hey guys, Around February/March of this year, I started having trouble connecting to Wi-Fi on my 2012 iMac (OS X 10.10.5). It started out as occasional dropouts, and eventually progressed into me being thoroughly unable to use the Internet without tethering to my iPhone (and even then, I couldn't use the iPhone's Wi-Fi connection — I had to use LTE/4G over USB). I started a thread about it, which you can check out here: Wi-Fi network cannot be joined in El Capitan (or Yosemite) I pretty much exhausted all possible options outside of taking it to a Genius Bar, and nothing seemed to work. One user even suggested I might have a broken Wi-Fi card. I sincerely doubt this to be the case, because out of nowhere, Wi-Fi started working properly again around June of this year, and it worked without issue for several months. Then, around September/October, I started experiencing the same problem, except this time, I took note of any events that seemed to correlate. Again, it started out as simple Wi-Fi dropouts, and connectivity would usually return after shutting down and restarting. It seemed to be triggered by watching long YouTube videos on Safari (usually 10 or more minutes). Not sure why, but this was the one common factor almost every time I got a dropout. Now, I'm back to the point where I simply cannot use Wi-Fi at all — the icon is greyed out in the menu bar, and I cannot connect to any available networks (my Macbook and iPhone both have no problems connecting to my home network). Interestingly enough, I was able to briefly get connectivity back last night. I turned Wi-Fi off, then turned Bluetooth off, turned Wi-Fi back on, and it connected to my home network instantly. The connection was fine for the remainder of the evening. Unfortunately, after booting up this morning, it looks like I'm back to square one — last night's solution is no longer working. Any help would be greatly appreciated!!! EDIT: Just tried turning off Bluetooth again (for probably the 10th time today), and it's working for now. Is this possibly a Bluetooth interference issue? The only BT device I use is an Apple keyboard. BT is disabled on my iPhone.