I have windows 8.1 64 bit version and when I check my sistem properies ot says I have 8.00GB of RAM installed only (3.99GB of RAM usable), I dont know what to do.
CPU: FX 4350
RAM: G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL
Motherboard: MSI 760GMA P34(FX)
CPU: FX 4350
RAM: G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL
Motherboard: MSI 760GMA P34(FX)