Support Need Help with phone not starting

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http://androidforums.com – My wife woke up this morning and her Skyrocket was off (it was on the charger so battery is charged and i also swapped it with my battery to verify) but anyway when i turn on the phone the SAMSUNG comes up and then it goes to a clack screen and the phone starts vibrating off and on every 1-2 seconds. Does anyone phone what may be going on and is there a fix?? Thanks in advance Adam (General)