Memory Modules – Why 4 of the Same Kind Are Not Working?

boothardware-failurememorymotherboard

I am trying to install 2 extra pairs of 2GB on my server, the motherboard is a GA-EP41-UD3L which is said to support up to 8GB and has 4 memory slots.

I have 4 memories of 2 GB being all of it:

  • DDR2
  • 1.80V
  • 5-5-5-18
  • 800MHz
  • Model: CM2X2048-6400C5

Once I plug it all, the board does 4 short beeps which entitles power failure by the manual information.

If I plug 2 of them at slots 1 and 3 it works just fine and detects 4GB, if I plug 3 of them on slots 1, 2 and 3 it boots up but does not detect the memory at slot 2.

Have also tried to set the bios to default before booting in.

  • What am I possible doing wrong here ?
  • Is this a motherboard problem ?
  • Memory problem ?

Best Answer

Are the memory modules single-sided?

Because of Intel chipset limitation, please use single-side memory module if four memory modules are to be installed.

From the Gigabyte support site (same info for both versions) here

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