4GB RAM only 2.6GB usable

CYapTiti

Honorable
Mar 13, 2017
4
0
10,510
Hello, I've upgraded my laptop from 2GB RAM to 4GB. It says only 2.6GB are usable. Please help

SPECS :
Toshiba Satellite C40A-106
Intel Core i3 2348M @2.30 GHz
4GB DDR3 1600
HD 3000 Graphics
500GB HDD
Windows 8 Pro 32-Bit