Windows 7 problem when upgrading RAM

arthurdecastro

Reputable
May 13, 2017
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Hi. I have a Gigabyte GA-H55M-S2HP, Intel i3 with 4GB of RAM and a 64bit Windows 7 home basic. I purchase two modules (Kingston) of 4GB each to speedup my system (both the old and the new have 1333mhz, DDR3). However, while the Bios see the total amount of the 8GB (and even after cleaning the CMOS memory), Windows freeze on the startup animation.

I tried put a pendrive where I have a Windows 7 Image and it freeze as well on the animation of booting. When I use the old's 2GB sticks, its fine.

Also, I tried turn on with only 1 of the new modules at time and the computer don't passes that first boot screen (it shows the amount of memory, but don't reach the line of frequency and can't enter the bios too), and it keeping restarting.

I've running the memory test on the windows repair utility and no errors showed up anyway.

What could it be?

EDIT: that's the new RAM: http://www.kingston.com/datasheets/kvr13n9s8_4.pdf
 
Solution
It could be because the new modules are high-density (8 ICs on one side) instead of low-density (8 ICs on each side); it would be easier to be sure if you provided the part number.
You can see on the second page that they have 8 ICs on one side; therefore they can't be compatible with an older H55 motherboard. The description also indicates they are high-density (512M x 64-bit).

G.Skill F3-10666CL9D-8GBNT or G.SKILL F3-1600C11D-8GNT will work. As you can see in the second picture, they have ICs on both sides: https://www.newegg.com/Product/Product.aspx?Item=N82E16820231635

If you're lucky, you may also be able to find a used kit from 2011 or before when they were using low-density ICs. In December 2015 I found an older F3-12800CL9D-8GBRL G.Skill kit manufactured in 2011 and I sold the new kit (same part number). G.Skill had authorized the RMA because the kit I received didn't match the pictures at Newegg https://www.newegg.com/Product/Product.aspx?Item=N82E16820231314&cm_re=F3-12800CL9D-8GBRL-_-20-231-314-_-Product (the picture indicates compatibility with socket 1156, but the kit that I received was different). Same part number, but high-density instead of low-density ICs. Unfortunately Newegg never updated the misleading pictures.