I installed 4gb of ram and only shows 3gb usable on my desktop.my motherboard specs say i can use 16gb max
Hi
Some of the installed RAM will always be reserved for the Hardware on the computer.
Press the WinKey+R to display the Run dialog.
Type resmon in the Open box and click OK. This will open the Resource Monitor.
Click the Memory Tab at the top to display the details of how the installed memory is being used.
Regards