Not reading all of the RAM

lukiuxis

Reputable
Jan 23, 2015
13
0
4,520
Hi, I have a problem that I can't solve with my RAM. I have 4x4gb of Corsair Vengeance memory and in the system information it is displayed as 16.0 GB (12.0 GB usable). I have no idea what the problem is. I have tried reinstalling my windows and reslottiong the RAM in different positions. I even got 2 of the sticks replaced. In the BIOS all 16 GB of RAM is displayed. I am using the default BIOS settings, I haven't changed anything. My full PC specs are posted below.
CPU: AMD fx-8150
RAM: Corsair Vengeance 4x4gb
GPU: EVGA GTX 970 SC
Motherboard: Asrock 970 Extreme 4
HDD: Seagate 1tb
SSD: Samsung 840 Pro 128gb
OS: Windows 8.1 Pro 64-bit