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原帖由: zafiroboss ,

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Hello! Thanks for interest and answers, few points:

1:  the 17 mac runs well with my 13"mac hdd on mavericks. The 13" mac runs well with the 17"mac hdd on leopard. But the 17"mac  dont start up with his own hdd.

2: i tried to start up pushing cmd, d, c, shift, nothing happened.  I have an usb memory bootheable with osx lion but i can't start from it.

3: as i saw other case probably 1 ram slot its faulty. I think the mac received a peak of power and damage little components. So i should try with new ram and hdd and still got the risk of a logic board faulty so i think there is nothing to do because i gonna spend more money than worth the old mac.

Like last shoot i will interchange the hdd and try to do the hardware test

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