New memory problems on 8-month-old P7P55D

[orleans704]

I built a new Asus P7P55D machine in Oct 2009. At that time my 4 sticks of F3-10666CL8D-4GBHK passed memtest and has been very reliable (with no overclocking). I had the system powered off for a day and when I turn it back on I got several BSOD (blue screen of death) which I have never seen before on this machine. It now will not pass memtest. Each stick individually will pass memtest, and even 2 sticks will pass. But with all 4 sticks installed it usually will not. When it does pass, a slight movement of the case or a reboot will start the errors. Moving DIMMs around (which I have done several times) does not help. It seems to find errors between addresses 5000-5200MB and 6000-6200MB. I guess that might be why it works with only 1 or 2 DIMMs installed. Errors occur with timings of 8-8-8-21 and with default everything which gives me 9-9-9-24. New BIOS update to 1702 did not help.

I have not been in the case of this machine in months. Up until Friday it has been stable for 8 months.

Thanks,
Chris

P7P55D Rev 1.02G (BIOS 1702)
Intel Core i5 2.66GHz
4 sticks (8GB) G.Skill F3-10666CL8D-4GBHK (DDR3-1333 PC3-10666 SPD CL8-8-8-21 1.5v)
APC Back-UPS RS800
Windows 7 64-bit
memtest86+ 4.10

[GSKILL TECH]

Try raising the QPI/DRAM Voltage. If problem persists, send the memory in for new replacements and that should solve the problem.

http://www.gskill.com/rma.php


Thank you
GSKILL TECH

[orleans704]

Thanks for the reply. I re-seated all the RAM. I reset to BIOS defaults and chose XMP but no luck. I increased the IMC voltage into the "yellow" category of 1.2 but no luck.

I appreciate your willingness to replace the DIMMs. Since the machine seems to work with 2, could I return 2 first and then return the other 2 after I receive the replacements?

Thanks,
Chris

[GSKILL TECH]

You can, but it is better to send both kits back so they can be re-tested to insure all 4 modules work together.

Thank you
GSKILL TECH

[orleans704]

Thanks. Could you estimate the time it takes G.Skill to replace the RAM. Basically how many days between your receipt and return shipment of the memory?

Chris

[GSKILL TECH]

1-2 days after we receive it, the rest is shipping time back to you.

Thank you
GSKILL TECH