I have a ThinkCentre A51 8131-1NU that came with 1.5 gigs of RAM. I just replaced it with 4 Gigs of RAM (4x1 gig sticks). however the BIOS only recognizes 3 gigs of RAM. I have installed the 64 bit version of windows 2003 and it too also reports only 3 gigs of RAM. How can i get the BIOS and OS to recognize the entire 4 gigs?
Here is the specs for the ram i installed:
Compatibility: PC
Manufacturer: Kingston Technology Company Packaged
Product Line: Kingston ValueRAM
RAM CAS Latency: CL4 Data Integrity
Check: Non-ECC Form
Factor: DIMM 240-pin
Lead Plating: Gold Memory Specification
Compliance: PC2-4200 Memory
Speed: 533 MHz Module
Configuration: 128 x 64 Module
Height (inch): 1.25
Registered or Buffered: Unbuffered
Storage Capacity: 1 GB
Supply Voltage: 1.8 V
Technology: DDR2
SDRAM Type: DRAM
Upgrade Type: Generic
this message is related to forum posts:
http://forums.lenovo.com/t5/R-Series-ThinkPad-Laptops/R61-Memory/m-p/19389
http://forums.lenovo.com/t5/A-and-M-Series-ThinkCentre/Thinkcentre-maximum-supported-RAM/m-p/131729#...
