Support Galaxy 10.1 tablet won't reset

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http://androidforums.com – I have a Galaxy 10.1 tablet. It started doing a firmware update last night, this morning when I checked it there was a blank screen, I tried re-starting a few times and it was stuck at the Samsung startup screen. I then tried to do a factory reset using the volume/start buttons, now it is still stuck on a blank screen??? Please help. (General)