Enable Second Ram Slot

I've been having RAM issues and can't find any fixes for the problem I have. At some point last year, I noticed in my system information it said for Installed Memory: 6.00 GB (4.00 GB usable). I wasn't sure what the problem was or if Windows 7 was just using 2GB to run. However, recently I decided to purchase 12GB of RAM (3x4GB) and when I installed it, I got Installed Memory: 18.0 GB (6.00 GB usable).

Also helps to enable XMP Profile as well to ensure the RAM settings are running based on the RAM's onboard spec profile. If un-sure about that, or how it would work per-Motherboard, before you even buy you can go to the official page for a particular Motherboard Model#, download the PDF Manual and review that where it refers to how to install RAM. I hear about this frequently. The computer did not have RAM in the slot from the factory, and when someone tries to add RAM, it does not recognize it. Sure the second module is compatible with this system? If you remove the original RAM module and put the new one in the slot where the original one was, how much RAM does the PC see in BIOS? If the PC sees the new module when it's alone, it's possible the two modules aren't compatible with each other. (Sometimes it didn't work. Then I changed slot. But, usually, it works after the second time. It's probably not the mobo's problem, because if i try to turn on the PC without RAM, it makes the continuous beep sound indicating the mobo is working properly. I think that it's either the PSU problem, or the RAM (probably the RAM).

HowEnable Second Ram Slot
I went into BIOS and saw that it sees all the memory in all 6 slots. But, only slots 1-3 are enabled. What's weirder is that slot 2 has a 4GB stick, but only 2GB is enabled. I don't see any option within BIOS to enable the slots or individually increase each RAM voltage.Enable Second Ram SlotEnable Second Ram SlotPci
Specs:
+ Show Spoiler +

Ram Slot Types

windows 7 64-bit
intel i7 930 1366 @ 3.0 GHz
GIGABYTE GA-X58A-UD3R LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Sapphire 100283-3L Radeon HD 5770 1GB 128-bit GDDR5
G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop Memory Model F3-12800CL9T-6GBNQ
G.SKILL Ripjaws Series 12GB (3 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL9T-12GBRL
Antec NEO ECO 620C 620W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply

Which Slot To Install Ram


carlos_9

New Member
Hi and thank you.
I builded 1 year my own PC, Specs:
CPU: Intel® Core™ i7-4790K ~4.0Ghz
RAM: Crucial Ballistix Sport 8GB (2 x 4GB) 1600Mhz
PSU: Thermaltake SMART M Series SP-850M 850W
MOBO: MSI Z97 PC MATE
WC: CORSAIR H80i
Since 6 months ago i was having a trouble: Sometimes when i was turning it on, it turned on and off repeatedly, the solution was: Remove the CMOS battery. 1 week ago a decide to clean it up, then i put everything back, and when i turned on, i got the problem, but this time removing the CMOS battery didn't work, i bought 12GB ram (1x8gb, 1x4GB Crucial Ballistix Sport @1600ghz), and helped me to understand what going on: Channel B (3 and 4 slots, counting from left to right) wasn't working right.
RAM in slot 1 only = boot
RAM in slot 2 only = boot
RAM in slot 3 only = turned on and off repeatedly
RAM in slot 4 only = turned on and off repeatedly
RAM in slot 1&2 only = boot
RAM in slot 1&3 only = turned on and off repeatedly
RAM in slot 1&4 only = turned on and off repeatedly
RAM in slot 2&3 only = turned on and off repeatedly
RAM in slot 2&4 only = turned on and off repeatedly
RAM in slot 3&4 only = turned on and off repeatedly
RAM in slot 1,2,3, and 4 = Boot (No display, keyboard and mouse were not lighting)
I tried:
Update to latest BIOS version
Clean slots with Contact cleaner (DeoxIT D5)
I don't know how to check voltage, etc.
Thank you so much