PC shuts down after RAM upgrade

[Victor_52]

I’m new to the forum and usually find myself here after explaining my computer problems to master GOOGLE, so decided to join and pose a burning question! I just need some clarification about various aspects of RAM, so here it goes:

My motherboard: ASUS RAMPAGE II GENE
My Processor: Intel Core i7 CPU 920 @ 2.67GHz
My BIOS: v1701

My previous RAM:3x2GB
My current RAM:6x2GB
Module Name: OCZ3G1600LV2G (all 6 modules/sticks are from the same manufacturer and the same model)
Module Size: 2 GB
Memory Type: DDR3 SDRAM
Memory Speed: DDR3-1066 (533 MHz)
Module Voltage: 1.5 V
Memory Timings:
@ 381 MHz 5-5-5-12 (CL-tRCD-tRP-tRAS)
@ 457 MHz 6-6-6-14 (CL-tRCD-tRP-tRAS)
@ 533 MHz 7-7-7-16 (CL-tRCD-tRP-tRAS)
@ 610 MHz 8-8-8-19 (CL-tRCD-tRP-tRAS)

OS: Windows 7 Ultimate SP1 (with all drivers and OS components updated through Driver Booster 4 and Windows Update, respectively on reformat).

The problem is after upgrading my RAM, my PC turns on automatically after 2 pauses (it starts, then stops, then starts and stops again, and only on the 3rd try it turns on successfully). Then, PC shuts down unexpectedly after some time. The time varies between 1 or 2 hours after power on. The problem is particularly noticeable when working on Google Chrome. I tried to disable GPU acceleration in Chrome but it doesn't help.

I guess it's about RAM and BIOS. I am not sure since Windows Event Viewer doesn't show the particular reason for unexpected shutdown.

Can you please advise?! Thank you very much in advance!!!

Victor

 

[elbert]

First check you bios is the latest as it has improve memory compatibility. https://www.asus.com/ROG-Republic-Of-Gamers/RAMPAGE_II_GENE/HelpDesk_Download/

Second see if a very small bump in voltage can get it stable. The try removing one of the new RAM sticks then the other testing each. If it works fine with one but not the other then one of the new sticks is bad.

 

[geofelt]

Ram is sold in kits for a reason.
A motherboard must manage all the ram using the same specs of voltage, cas and speed.
Ram from the same vendor and part number can be made up of differing manufacturing components over time.
Some motherboards can be very sensitive to this.
This is more difficult when 4 sticks are involved.
That is why ram vendors will NOT support ram that is not bought in one kit.
It is safer to get what you need in one kit.
But, it is a bit more expensive because of the added matching of all the sticks to insure compatibility.

One thing you can try is to enter the bios and increase the ram voltage a bit. From 1.5 to 1.55 for ecample.
Matching is particularly important the more sticks that are involved.

I would suggest returning what you bought and buy a supported kit.
You want documented ram compatibility. If you should ever have a problem, you want supported ram.
Otherwise, you risk a finger pointing battle between the ram and motherboard support sites, claiming "not my problem".
One place to check is your motherboards web site.
Look for the ram QVL list. It lists all of the ram kits that have been tested with that particular motherboard.
Sometimes the QVL list is not updated after the motherboard is released.
For more current info, go to a ram vendor's web site and access their ram selection configurator.
Enter your motherboard, and you will get a list of compatible ram kits.
While today's motherboards are more tolerant of different ram, it makes sense to buy ram that is known to work and is supported.