Long press the 'Play&Pause' button on screen to pop up the disc. If the disc is still unable to pop up, updating the software would help. we made a detailed steps operation instructions. Please contact us for getting the link. If the mount bracket doesn't fit your car headrest, we can offer smaller mount. Please contact us via message or Gmail email (on warranty card), as we need your shipping address. Any issue (before sale or after sale), please email us directly. We will spare no effort to help until you are totally satisfied.