BIOS only sees 3 GB memory even though 4 GB is installed?

Question

Hi all, I have a DFI Infinity NF4 SLI motherboard and currently have 4 GB of memory installed in it (4 x 1 GB sticks). In the BIOS, only 3 GB is shown, but when I boot up Windows Vista (32-bit), 4 GB is shown in the 'Welcome Center' window. I know that 32-bit operating systems can only use 3 GB, but is there something wrong with the BIOS preventing it from seeing all 4 GB of memory? Or is that just how it is? I do plan on installing Vista 64-bit very soon to utilize all 4 GB. Thanks!

Jag · Accepted Answer

Any 32 bit OS will have the same issue you describe.  Nothing wrong with your BIOS.  A quick and easy "sanity check".   Burn a Fedora or Kubuntu LIVE 64 bit edition CD or DVD.  Boot with it and verify that the OS "sees" 4G.

Andrew M · Answer

Are you sure your motherboard can support four? If so, then the simple answer would be just to go with what Vista sayes. I dont see why it matters what BIOS sayes if you know your OS will take full advantage of all of your RAM.

BIOS only sees 3 GB memory even though 4 GB is installed?

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