Macbook Pro 2gb to 4gb upgrade, black screen at start up

Kilobyte Kid

Macbook Pro 2gb to 4gb upgrade, black screen at start up

Hello,

I ordered the following RAM for my MBP (early 2008 version), since my mac can upgrade and utilize 4gb.

 

Crucial 4GB (2 x 2GB) 200-Pin DDR2 SO-DIMM DDR2 667 (PC2 5300) Dual Channel Kit Laptop Memory Model CT2KIT25664AC667 - OEM

 

Below are my Mac Specs (with one new 2gb stick and one stock 1gb stick)


  Model Name:    MacBook Pro
  Model Identifier:    MacBookPro4,1
  Processor Name:    Intel Core 2 Duo
  Processor Speed:    2.4 GHz
  Number Of Processors:    1
  Total Number Of Cores:    2
  L2 Cache:    3 MB
  Memory:    3 GB
  Bus Speed:    800 MHz
  Boot ROM Version:    MBP41.00C1.B03
  SMC Version (system):    1.27f2
  Serial Number (system):    W88451121XR
  Hardware UUID:    8D21D991-7675-5013-BBA8-AEE7D61125A5


Here is my problem:
when i put both of the 2gb sticks in i get a black screen at start up.
when i put the stock RAM back in it works fine.
when i put one of the 2GB sticks and one of the 1 GB sticks in, it also works, and registers as 3GB.

it's probably worth mentioning that any combination of the sticks seems to work in, regardless of the dimm, except when both of the 2GB sticks are in at the same time.

i'm confident that i'm pushing the RAM in the whole way, since it registers when the right combination is in place. i've seen similar threads, but no confirmed solutions for this. any help would be appreciated.  it'd be nice to get the full compatible 4gb of ram.

thanks

Tags (1)
3 Replies
Bit Baby

Re: Macbook Pro 2gb to 4gb upgrade, black screen at start up

Okay, I am having this very exact same problem.  Same Macbook Pro, same RAM kit.  Some help from Crucial?

Bank and Slot Hot Shot

Re: Macbook Pro 2gb to 4gb upgrade, black screen at start up

There are many posts about this issue. Try reading a little further. But, ultimately, you should try contacting Crucial about support. Here is the link:

 

http://www.forum.crucial.com/t5/Warranty-Information/How-to-Contact-Customer-Service/td-p/498

Bit Baby

Re: Macbook Pro 2gb to 4gb upgrade, black screen at start up

I am having this same problem as well...why aren't there any answers from Crucial on this?  Grrrr!!!