Sony VAIO VPCEA23EL: RAM Problem

[Cesar Poveda]

Hellow friends; I have a problem with my laptop, is not a very new one. I tried to upgrade the ram modules and bought two 4GB Kingston Rams; the model of the rams is KVR13S9S8/4 both are the same PC3-10600 DDR3-1333MHz non-ECC Unbuffered CL9 204-Pin SoDimm Single Rank, x8 Memory Module but when I installed them; my laptop started to reboot constantly, i investigated that my mainboard does support DDR3-1333MHz frequency and 1.5V supply and my processor works with 1066Mhz (but the thing that is importat is the mainboard compatiblility I  think), however I came to the conclution that something in my BIOS is not well configured, but my BIOS is locked. See; my laptop is a Sony VAIO VPCEA23EL, my processor is an Intel Pentium P6000, my BIOS is an AMI BIOS version 08.00.10 and the last rom for it, is R0300Y8 EC Version K0300Y8.

Please help me to modify my BIOS rom for to make that the rams worked in my laptop, I attach the last rom of my BIOS. Thanks!


  VPCEA23ELBIOS.rom (Size: 2 MB / Downloads: 2)

[Cesar Poveda]

Ok now i think i found the answer to my problem, I share it here for to help to another with a similar question.

You can see the solution here https://forums.tomshardware.com/threads/...y.2525428/ 

The HP Pavilion dv6 3030em supports memory with densities up to 2 Gb.

Kingston ValueRAM module, part number KVR13S9S8/4, uses 4 Gb memory chips which are not compatible with the system. The Kingston ValueRAM module, part number KVR1333D3S9/4G, uses 2 Gb memory chips which works with the computer.

Memory chip densities are usually quoted in Mega bits (Mb) or in Giga bits (Gb).



Memory chip density = number of memory cell locations in memory chip (usually in millions (M), or in billions (G)) x memory chip data width in bits (b).

For example, a certain memory chip might be of 256M x 8 bit configuration. The 256M means there are ~ 256 million memory cell locations, and the 8 means the memory data width is 8 bits. So memory chip density = 256M x 8 bits = 2048 million bits ~ 2 Giga bits = 2 Gb.



The memory chip configuration details are sometimes available from memory module manufacturers, and are also available from memory chip manufacturers.



The limitation of memory density that can be used in a system is dependent on the memory controller which sets the range of compatible memory densities that can be used. The memory controller is integrated into CPU's these days, but early memory controllers were integrated within chipsets.



Information on memory density compatibility with memory controllers is available from Intel website where details of CPU's and chipsets can be viewed and/or downloaded. Unfortunately detailed information for AMD CPU's and chipsets are usually not readily available, so it can't be determined for certain what memory chip densities are supported in AMD based systems.



So the procedure for determining memory density compatibility is to first find the limitations/range of memory chip density that are compatible with the memory controller by viewing the detailed CPU or chipset documentation from the CPU or chipset manufacturer.



Then view and/or download memory chip configuration details for memory modules of interest at memory module manufacturers websites, or at memory chip manufacturers websites. In some cases memory chip details are not provided by memory module manufacturers unfortunately, so it can't be determined what the density of memory chips are.


Calculate memory chip density using above formula if memory chip density is not already provided by the manufacturer. If the density of the memory chip is outside the range of compatible memory chip density for the memory controller, then the memory chip (and therefore the memory module) will not be compatible. Otherwise the memory chip and, therefore the memory module, should be compatible with the memory controller.