How To Factory Reset Or Reboot Your Google Chromecast (All Generations) – SlashGear

It’s worth repeating that you should only consider factory resetting your Chromecast when simply rebooting doesn’t do the trick. By definition, performing a reset on your Chromecast will permanently clear all of your previous settings on the device and will return it to its factory state. This step, once performed, cannot be undone. Assuming you want to proceed, here’s how to factory reset a Chromecast directly from the device (all generations, including Chromecast with Google TV):

1. Connect the Chromecast to a TV and power it on.
2. Long-press the button on the back of the Chromecast. With a first-generation Chromecast, you may need to hold down the button for at least 25 seconds.
3. The LED will begin to blink in either red, orange, or yellow, depending on the generation.
4. Once the LED light turns solid white (blinking white, for Chromecast 1st gen), let go of the button.

At this stage, your TV may go blank, and your Chromecast device will reset and restart. Those who have a Chromecast with Google TV can use the Chromecast Voice Remote to do a reset: select your profile in the top-right corner of the TV screen, then go to Settings, select System, go to About, and then choose Factory Reset.