16gb of RAM but only 7.9 usable

Rokuldav

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Mar 28, 2014
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Ever since I got a new motherboard, (the m5a97 le r2.0), and did a fresh install of windows, my RAM had been cut in half. After the new motherboard, I had 8gb of RAM but only 3.9 usable. This caused me to go out and buy 8gb more of RAM. Ever since then, I have been getting bluescreens on not all games, but certain ones, such as Napoleon Total War, Civ V, Red Orchestra 2. I want to take out my new RAM and test my old RAM to see if it is bluescreening BECAUSE of my new RAM, but I cannot do this because If I do take out my new ram (8gb) it will leave me with 8gb, which gets automatically cut down to 3.9gb, and can't run any games.

My CPU-Z RAM slots http://imgur.com/a/tjxgu

Why is my RAM cut in half?
 

Rokuldav

Honorable
Mar 28, 2014
200
0
10,680


64 bit, EUFI BIOS doesn't offer an option like that.
 

Rokuldav

Honorable
Mar 28, 2014
200
0
10,680


My main concern is that I need to fix the RAM cut in half problem before I can test my original RAM.