Member Avatar for dlwargi

How do I start to find out why my new computer will not reconize the 8GB on the motherboars when the motherboard says it will accept 8 GB?

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  • Latest Post Latest Post by Jupiter 2

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Short expert add-on referencing the replies from and :

First check what the motherboard actually reports. Reboot into BIOS/UEFI and note the total RAM it lists. If the firmware does not show the full 8GB, power down and reseat the DIMMs, then try one stick at a time and different slots to isolate a bad module or a bad slot. Consult the motherboard manual for per‑slot capacity and population rules — some boards need specific slot population to reach full capacity.

If the BIOS shows the full 8GB but Windows does not, the limitation is at the OS/kernel level rather than the hardware. To make use of all installed RAM you need a 64‑bit operating system and matching 64‑bit drivers; that requires a reinstall and driver checks, so confirm driver availability before switching. If you keep the current 32‑bit install, moving some modules as plans is a pragmatic short‑term solution.

Other things not yet covered: mixing registered (RDIMM) and unbuffered (UDIMM) modules, or mixing ECC and non‑ECC sticks, can prevent full recognition — use identical, supported modules where possible. A BIOS update can add support for newer high‑density DIMMs. Before making OS changes, run a bootable memory tester (Memtest86+ or equivalent) to verify the sticks are good. When moving modules between machines, keep matched pairs for dual‑channel operation and observe ESD precautions.

Note: the HDD/free‑space comments from concern storage and pagefile behavior; they are a separate issue from RAM recognition.

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Member Avatar for dlwargi

Thanks I found that I oly have the 32 bit OS so I will move 4GB to the other machine

Member Avatar for Jupiter 2

8gb is not good enough for xp. I've seen XP run on 4gb but you can't do much except play Spider Solitaire.

You can't even buy 80gb HDD any more. The smallest drive available is 160gb. Costs about $80.

You need 15% free space for Windows XP, 20% free space for Vista.

Member Avatar for caperjack

8gb is not good enough for xp. I've seen XP run on 4gb but you can't do much except play Spider Solitaire.

You can't even buy 80gb HDD any more. The smallest drive available is 160gb. Costs about $80.

You need 15% free space for Windows XP, 20% free space for Vista.

poster is referring to Ram ,not hard drive

Member Avatar for Jupiter 2

oops! Thanks for the update. I'm an older person so sometimes I am mistaken about things.

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