Google Nexus Q hard reset

Manual factory data reset media-streaming entertainment device
You can also factory reset your Nexus Q without using your phone or tablet:
1. Unplug the Nexus Q, then plug it in again.
2. As soon as the ring LED lights up, place your palm over the single LED on top.
The ring LED starts flashing red. Keep your palm in place until the ring LED starts to display a rotating blue spot (about 10 seconds).
If you lift your finger too soon, the LED turns solid red. If this happens, unplug and plug in the Nexus Q again to start over.
During a successful reset, the ring LED pulses purple to indicate that it's wiping all data. Once the reset is complete, the Nexus Q starts up
again, displaying a rotating blue spot. After a short time, it displays a solid color to indicate it's ready to be set up again.

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.