Solved Windows Xp not seeing Memory

March 28, 2012 at 08:54:10
Specs: Windows XP, i3 3.3 ghz/ 2x Knigston HyperX 4gb
Recently built new computer and for some reason Windows XP is only seeing one Stick of Memory.

I've got 2 Kingston HyperX Blu 4GB 240-Pin DDR3 SDRAM DDR3 1333 Desktop Memory Model KHX1333C9D3B1/4G

plugged into a GIGABYTE GA-H61MA-D3V LGA 1155 Intel H61 SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard

I've run Memtest and both of them were found and passed the test. My Boot.Ini is fine and doesn't have the MaxMem.

I can' seem to find the problem

See More: Windows Xp not seeing Memory

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March 28, 2012 at 08:57:47
✔ Best Answer
XP is a 32-bit operating system, therefore the max amount of RAM that will be recognized is 4GB. Actually, it will be closer to 3.0-3.5GB due to the memory mapping. This may help explain:

If you want to make full use of ALL your RAM, you will need to install a 64-bit OS.

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March 29, 2012 at 09:03:42
Don't why u are running Win xp on Modern system.

You know the real meaning of peace only if you have been through the war.

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March 30, 2012 at 10:28:29
All versions of XP - Home, Pro, MCE 200x - except 64 bit Pro are 32 bit operating systems - very few people have 64 bit Pro.

The 4gb virtual memory address limit for 32 bit operating systems.
An example of 3gb working better than 4gb in a 32 bit operating system.

See Response 6:

jam's explanation refers to links on other sties:

A better explanation I've seen.

If you have a 32 bit operating system and you have installed 4gb (or more) in the mboard, the amount of that ram available to Windows and the user is
4gb minus the amount of ram your devices require or have.
- minus the amount of ram shared with onboard video if you're using that
- and/or - minus the amount of ram your dedicated video card installed in a slot has.
If you have more than one video card installed in a slot, it would be minus the ram for all of them.
(and = Some mboard main chipsets have Hybrid video capability. If you have a PCI-E X16 video card installed in a mboard slot that is supported by that feature, it's often the default for both the onboard video and the video on the card to work at the same time, unless you change default bios Setup settings. In that case it would be minus the ram for both of them.)
- minus the amount of ram your sound adapter has, if that applies - e.g. sound cards installed in a mboard slot often have ram
- minus the amount of ram any other devices have, other than hard drives and optical drives, if that applies.

"2 Kingston HyperX Blu 4GB.."

"....plugged into a GIGABYTE GA-H61MA-D3V..."

Kingston DOES NOT list HyperX KHX1333C9D3B1 anything for your mboard model !

When a ram module's part number is NOT listed, there's no guarantee it will work properly with your mbord model.
It MAY work fine, but it may NOT, even when it passes a memory diagnostics test.

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