Installed 16gb (2x8gb) RAM, system shows only 8gb

[okcfireman]

I installed 16mb of DDR3 1600 on my Gigabyte 78LMT-USB3 rev. 6.It read as only 8gb. Any ideas?

 

[lumineZ]

If you installed 16MB and got 8GB you should be extremly happy

jokes aside tho

Take them out, and plug them back in. Maybe you have not pressed one module all the way into the DIMM slot.

EDIT:

Use CPU-Z to see if the DIMM slot you are using are listed. If not there is your problem.

Try different DIMM slots if the problem is still there, since there is a slight chance that the DIMM slot could be damaged.

 

[rgd1101]

MERGED QUESTION
Question from okcfireman : "Motherboard reads 16mb PC3 10600 as 8gb PC3 10700"

I installed 16mb of DDR3 1600 on my Gigabyte 78LMT-USB3 rev. 6.It read as only 8gb, operating at 1333 mhz.

What is the issue?

https://www.gigabyte.com/Motherboard/GA-78LMT-USB3-rev-60#sp
Support for 1600(O.C.)/1333/1066 MHz memory modules

if you want to run it at 1600, you need to OC it. read the manual to see how to do it

 

[bjornl]

What does your BIOS splash screen show?
If this only shows 8gb, then:
Try booting to the bios screen with only 1 DIMM. Does it show up?
Try it again with only the other dimm. Does it show up?
If both dimms show up on their own, try putting the 2nd dimm in another slot. For example, if you are using slots 1 and 2, try 1 and 3.

Are you using on board video? If so, how much ram did you reserve for video?

In windows, open msconfig and see if you have set a maximum amount for your available ram?