Memory upgrade problem Gateway NV55S20u


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I?m trying to upgrade the ram memory from 4GB to 8GB, the memory I purchased has the same specs (DDR3 1333 Hynix 4 GB DDR3 RAM PC3-10600 204-Pin Laptop SODIMM) 2X4GB as the Kinston ACR256X64D3S13C9G installed from the factory. For some reason the laptop will not show any display, I tried one slot at a time and no display. With the old memory (2GB) powers up just fine, is there a certain procedure to follow for the laptop to read correctly the larger memory with this laptop?

I tried one of the Hynix and one of the Kingston and it did power up, in the BIOS it reads 6GB installed, but in the OS (Windows 7 64-bit) it only shows the 2GB not the 6GB installed.

I would try a BIOS update. Sounds like it can't read that RAM capacity. Although the specs say it takes up to 8GB, that could be on a later BIOS upgrade.

But I can't find anything much about it. Help?

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