Windows 7 Forums - View Single Post - 4GB of RAM installed only showing 3GB

System Manufacturer/Model Number Self built custom
OS Windows 7 Ultimate x64 SP1
CPU Intel i7-980X 3.3 Ghz (3.48 Ghz OC'd)
Motherboard ASUS P6X58D Premium
Memory 12 GB (2GBx6) DDR3 PC3-16000 2000 MHz Kingston HyperX
Graphics Card Sapphire HD5870 Eyefinity 6 2GB
Sound Card Realtek HD Audio ALC889 Integrated Chip
Monitor(s) Displays 3x 27" Asus VE278Q
Screen Resolution 1920x1080

Keyboard Logitech Cordless Desktop MX 5500 Revolution
Mouse Logitech Cordless Desktop MX 5500 Revolution
PSU OCZ Series Gold OCZZ1000M 1000W
Case Corsair Obsidian 800D
Cooling Thermalright Ultra 120 Extreme Copper CPU heat sink w/120 MM
Hard Drives 160GB OCZ RevoDrive X2 ** 2 x 1TB Samsung HDD HD154UI SATA
Internet Speed 50 Mb/s Download and 2 Mb/s Upload
Other Info Microsoft LifeCam Cinema ** Lite-On iHBS212 12x BD Writer ** Samsung CLX-3175FW Printer ** Netgear WNDR3800 Router ** Motorola SBG6580 Cable Modem ** 2x APC Back-UPS XS 1500

01-25-2009	#3 (permalink)
Brink Windows 7 Ultimate x64 SP1 34,764 posts Texas	Hello Adan, You might see if after resetting your BIOS settings back to default, it may show all 4GB. Is your RAM sticks all of the same type, timings, and voltage requirements?
My System Specs