I have Windows 7 Home Premium (64 bit) OS installed. My motherboard is able to handle up to 32 GB of RAM.
I recently upgraded my computer to 20 GB of RAM, but the computer says installed RAM is 20 GB (16 GB usable).
I have four slots on the MB, and I installed two 8 GB RAM closest to the CPU and two 2 GB RAM on the remaining slots.
I made sure the RAM are the same (DDR3 1600 MHz)
What am I doing wrong? Why am I seeing this issue in my computer's Control Panel Home?
Just in case it matters, I also installed GTX 770 GPU 2 GB memory.
Here is the specification on my motherboard: http://www.asus.com/Motherboards/P8P67_LE/specifications/.