title: USB Debugging not working, adb ignores Nexus 7
body: <p>For several weeks, I was able to connect my Nexus 7 2 to my computer running Windows 7, and Eclipse would recognize it, allowing me to run apps on it. The device also showed up when I ran the <code>adb devices</code> command. Every time I plugged the Nexus 7 into the computer, the tablet asked if I wanted to allow USB debugging at that time. (Oddly, it never asked me whether I wanted to always allow it from that computer, but I didn't care.)</p>
  
  <p>I recently updated the tablet to Android 4.4.2. I also updated the Android SDKs through the Android SDK manager. Now, when I plug the tablet in, I do not get prompt about USB debugging on the tablet, and neither Eclipse nor adb can see that it is there.</p>
  
  <p>Here is a list of things I tried to do, gathering ideas from various forums around the web.</p>
  
  <ul>
  <li>Re-download the Asus drivers for the Nexus 7 and update the driver. However, Windows does not even recognize this as the right drivers for this device.</li>
  <li>Turn USB Debugging off and on on the tablet, and also revoke all USB debugging permissions.</li>
  <li>Change the connection mode from media device to camera</li>
  <li>Switch the runtime from Dalvik to ART</li>
  <li>Type adb kill-server followed by adb start-server in the command line</li>
  <li>Delete eclipse and all the Android SDK and download them all over again</li>
  </ul>
  
  <p>None of this worked. Any other ideas on what to try?</p>