I have an old IBM ThinkCentre 8189F1U desktop. It is running Window 7 Enterprise 32-bit. It was accessing the hd a lot with 2GB of memory so I bought 4 new sticks of memory (4x1GB). The BIOS only detects 2.3GB. Windows 7 shows 4GB installed but only 2.3GB usable. The MB is an IBM FRU PN 13R8926 and the BIOS is Phoenix Firstbios 2AKT51AUS 7/6/2005. The MB documentation states that it will access 4GB of memory. Any help would be appreciated as currently I am unable to use the newly purchased memory.
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