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  1.    #1  
    Hi all,

    My Pre plus showed the question mark battery symbol since last Friday. I searched all precentral advice and still could not get it working. Anyone knows how to get it to USB mode for webdoctoring? Thank you in advance.
  2. #2  
    that's what it does if you hold the power button and volume button.

    to restart it, hold the power button and flip the mute switch 3 times.

    sometimes you can use grey+sym+Are to force a reboot.
  3. #3  
    means you have no battery in.

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