Some people have reported that when they go to ride their Peloton they get an error screen with a message that says "No Command", and has a picture of a dead Android icon (sometimes also referred to as the Peloton Dead Robot or Peloton Sad Robot). The bike obviously won't work when this is happening. The first step would be to try turning it off and on again, as well as unplugging it from the wall, waiting 1 minute, and plugging it back in again.
If those steps don't fix the "No Command" issue, try the following steps:
Press and hold the power button and "volume up" buttons at the same time.
Once the screen turns on, let go of both buttons at the same time.
Use the volume down button to scroll to the menu item that says "Wipe Cache Partition". Press the power button to select it.
Once this process completes, use the power button to reset your Peloton.
If the steps above don't work, or you don't get to the system screen to select "Wipe Cache Partition", try again, but only hold the power and volume up button for 3 seconds.
All your data is stored on the cloud, so you won't lose any rides or history by resetting the cache partition. You will have to re-add your user profiles again, but once those are added, it will import all your history again!