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totally dead after upgrade ram and shutdown

I try to upgrade ram to 16GB and replace HDD and optical drive with SSD. When I finish remove the optical drive, I realized I didn't have optical bay then I put it back and test my ram. First time that I turned on after I put ram, remove HDD, remove optical drive, installed 8GBx2 kingston DDR3 1333, put the original HDD and optical drive back, it worked. Then I turn off because facetime camera disconnected and replace original HDD with SSD OCZ Vector 128GB and turn tried to turn it on and nothing happen.

clue:

1.reinstall the orginal HDD with original ram, still have nothing

2.when installed back cover with screws, I heard HDD sound.

3.Just brought on mid 2012

4.battery full and adapter still work very well

5.Can be that I forgot to unplug battery from logic board(not sure)

6.I remove the battery sticker and place it back.

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Please give us the last three figures of your serial number.

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Thanks for your help. Last night I did everything like I did before I had problems, put in the new rams and ssd then it wake up.

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Ok, did you carbon copy clone the new hard drive with the old one. If not then thats your problem, If you can't do that then you need to get a boot drive or OS installation cd.

Hope this helps,

John H. Laney

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