Dell Laptop memory 4G issue

[calind83]

Hello everyone,
I own an Dell Latitude E5520m. In Tech specs, they say that this laptop can have max 8G Ram memory. By default, mine, has 2G.
I bought 2X4G memory Ram from Corsair DDR3, 1066MHZ wich specs are compatible with my laptop but the problem is that when i mount one 4G card on slot B, my laptop dosen't start.
The same card is working in slot A, and a 2G card is also working fin on slot B.
What do you think that is the problem?
Best regards!
Calin D.

 

[helpstar]

Please post the exact model of your new and old RAM too (labeled on the RAM itself)

 

[calind83]

Corsair CMSO4GX3M1A1333C9 Value Select 4 GB (1 x 4 GB) DDR3 1333 MHz CL9 is the new RAM, is working just in slot A, in slot B, isn't working.

 

[helpstar]

Is the latest BIOS installed?
https://downloads.dell.com/bios/E5520MA01.EXE

 

[calind83]

yest, the latest.

 

[helpstar]

download http://memtest.org/download/5.01/memtest86+-5.01.usb.installer.zip
unzip and install the tool to an empty usb flash drive,
boot from USB while one RAM is installed in slot A
if no errors are detected, install the other 4G RAM in slot A and run the USB tool again

what´s the model of your old 2G RAM?

 

[calind83]

i laso did that, both memory works fine in slot A but when i connect in slot B, my laptop dosen't start, is just vlack screen and then turn off, not even bios.

 

[helpstar]

So you checked both new RAM modules with the memtest tool?

Than it looks like an incompatibility issue. Eventually other RAM will work

In windows will be 6GB recognized?

 

[calind83]

i also tried with kingston 4G modules and is the same situation, in slot B is not working. I guess that slot B can't handle moore than 2G., I was courious if somebody else has this situation before.

 

[helpstar]

You can try loading default settings in BIOS while one 4G is installed.

Did you remove the battery while installing the RAM?

 

[calind83]

yes, i removed, i loaded default setting in bios but is the same situation

 

[helpstar]

if you install 4G and 2G, is windows regognizing 6G in total?

press "win" + "pause"

 

[helpstar]

And which CPU is used?

 

[calind83]

in windows is showing 6G

 

[helpstar]

Which CPU is it?

 

[calind83]

Intel Core i5-2520M