NicoMan said:Have you tried removing the extra RAM installed by the reseller? Surely Apple would have no means to check that YOU opened the PB. The 17" is quite picky with RAM (a lot more than the 12" and the 15") in my own experience.
Or maybe you will wait for a replacement? (I know that I wouldn't be able to resist the temptation to open it...)
Reseller JUST changed RAM and it Works!