Ram upgrade HELP

[gu4rd1an]

Hello, just upgraded my macbook pro mid 2010 13" (lion) with 2 sodimm DDR3 corsair mac memory 4gb -> SYSTEM HANGS

Booting in safe mode i can see a problem after

Created virtif XXXXXXXXXXX p2p0

System hangs also if try to boot the recovery HD.
Right now i'm starting a memtest....

Hints?

 

[pat park]

pull the new ram out and install the stock ram. If it boots up, then you have bad ram.

alos, make sure they are seated properly.

 

[gu4rd1an]

the old RAM is good, system normally boots.
Now I'm doing a memtest in single user mode on each corsair sodimm

 

[gu4rd1an]

Ok problem is my macbook 7,1 13" has 1067mhz stock ram, new ram are 1333 (corsair mac memory 4gb each) and, as i can read googling around, it's an EFI issue related to the video ram (it seems only works at 1067 mhz on THIS macbook!)

Mixing a stock ram with a new ram bank system works perfectly because clock is setted to 1067.

Only solution I found at the moment it's flash the SPD on the new RAM to 1067 with thaiphoon burner (http://softnology.biz/tips_macbookpro_1600.html)