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12868 Views 3 Replies Latest reply: Jan 29, 2009 9:26 AM by snatchmo
Currently Being ModeratedJan 28, 2009 8:09 PM (in response to snatchmo)Hi snatchmo: Your description of the issue sounds suspiciously like an issue with incorrect RAM. There have been quite a few posts on here that are like yours. Work fine with one original stick of RAM and one new one, but will not boot with 2 new sticks. The common thread seems to be RAM that is rated at 800mHz. Is your RAM rated to work at 800mHz, as well as 667mHz? If you have a model/part number on the RAM we may be able check it's specs.
Hope this helps
StedmanMBP 1.83, 2gB RAM & iMac (Al) 2.4, 4gB RAM, Mac OS X (10.5.6), iPod mini, iPod shuffle, iPod Touch, Apple TV
Currently Being ModeratedJan 28, 2009 8:17 PM (in response to stedman1)Hi Stedman,
The memory I have is mfg'd or perhaps better stated, marketed, by Centon, pn. 2GB667LT, and has no reference to 800MHz. I'm slogging my way through the posts and have yet to encounter an issue exactly like mine yet, many similar though.
Thanks for respondin'.MBP 4.1, Mac OS X (10.5.6)
Currently Being ModeratedJan 29, 2009 9:26 AM (in response to stedman1)Hi again,
Response from Centon suggests this: "MacBook Pro EFI Firmware Update 1.6 "
I don't think it applies.
Model Name: MacBook Pro
Model Identifier: MacBookPro4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.5 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 3 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP41.00C1.B00
SMC Version: 1.28f1
Still at a loss as to why both modules won't work together. Centon advises that system should boot with only one module installed, I'll give it a try.
Many thanksMBP 4.1, Mac OS X (10.5.6)