Upgrading RAM on Satellite L555-10R


I have a satellite L555-10R, Win 7 64 bit, main Board TOSHIBA KTWAA Intel GM45/GM47 chipset, 1.9 BIOS, CPU Intel COre 2 duo P7450;

I want to upgrade ram 2x2gb (SAMSUNG) to 2 x 4 GB (CORSAIR). Only the ram that I put in the location #1 is recognized as a result system starts and detects 6 GB of RAM. When I put the RAM 2nd Slot #2, the PC does not start. It seems that it does not detects hard (the LED on the front of the PC don't not ligth during startup). I can't go into the BIOS (even if I press the F2 key), black screen, all I can do is power off.

I'd appreciate your help, if you have an idea.
Thank you




First some general information on your machine:
Your laptop can be upgraded to the top 8 GB and max upgrade, you can use both modules of memory of 4 GB.
Compatible 4 for GB DDR3 - 1066 MHz apart number PA3677U-1M4G. Module of memory with this part number is tested and 100% compatible with your device.

If you check this forum you will find number of threads as your one, where people try to level of RAM using Rams Corsair and spoke of the same problems. Obviously the reason for non-working machine is compatibility issue with these RAM modules.

The 'value' Modules of RAM use many markets good chips using several banks/channels, which can cause problems of compatibility with some chipsets/CPUS.

I highly recommend to use high quality and 100% compatible modules of RAM from Toshiba or Kingston.

Tags: Toshiba

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