Try to plug it into a different computer. If you get the little bubble that tells you that it found new hardware, then you got a problem with the computer. If it doesnt, then there is a problem with the phone...

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.