New Bought RAM cannot be recognised by BIOS, but CPU-Z can see it

[Eric_Mars]

Hi There,

I Bought a new HP 550-117a 2 month ago and wanted to add a new RAM to the board, however, the BIOS cannot recognise it, even though CPU-Z can see it.

The original RAM with HP 550-117a is Hynix DDR3L 1600 8G. 

The new RAM I bought is Kingston DDR3 1600 8G.

However, in the Task Manager, only 8G can be recognized:

Could you please help me regarding this?

1. How can I fix this?

2. I checked "System Configuration", there is no limit on the max RAM.

Thank you.

[old_geekster]

@Eric_Mars, welcome to the forum.

The only difference in the two modules is the voltage.  The original memory is 1.35 V and the new memory is 1.50 V.  I am not positive, but I believe this is your problem.  I have seen less reason for two different sticks of memory not to be compatible.  Also, the maximum memory that is supported by the motherboard is 16 GB:

Dual channel memory architecture
Two 240-pin DDR3 DIMM sockets
Supports the following:
PC3-12800 (DDR3-1600)
PC3-10600 (DDR3-1333)

Supports 1 GB, 2 GB, 4 GB and 8 GB DIMMs

Supports up to 4 GB on 32-bit systems
 

note:
32-bit systems cannot address a full 4.0 GB of memory.

Supports up to 16 GB (unbuffered) on 64-bit computers
 

note:
Maximum memory shown reflects the capability of the hardware and can be limited further in the operating system.

Here is the memory that is recommended by Crucial Memory.  It is always better to replace the old memory to eliminate the possibility of conflicts.

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