Win7 random restarts (new system)

[kisk]

Just built this new system:

Microsoft Windows 7 Home Premium 64-bit
ASUS P7P55D-E LGA 1156 Intel P55
Intel Core i5-750 Lynnfield 2.66GHz 8MB L3 Cache LGA 1156 95W Quad-Core
OCZ Gold 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
SAPPHIRE Vapor-X 100283VXL Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.0 x16
4x Western Digital Caviar Blue WD5000AAKS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s
-- 1x in SATA (OS), 3x in On-Board Raid-0
LITE-ON Black 24X DVD+R 24X DVD-R SATA
Antec EarthWatts EA750 750W


BIOS & all drivers are up to date.


Once a day I am getting random restarts. Restarts have never happened while I'm at the computer and they don't produce a memory dump. Admin event log shows "Kernel-Power" [EventID=41, Task Category=63].

Been trying to rule out what it could be before I start the RMA processes.

Memtest86+ shows no errors with single/double sticks in each slots. The ram does however make me wonder because the newegg specs show 8-8-8-24 @ 1.9v but when I installed it defaulted to 7-7-7-20 @ 1.5. [Question: A] Would that cause my system to do this?

My hard drive config is 1x [of above (500mb)] for my OS and I'm using the other 3 in Raid-0 config. [Question: B] Should I try to disable the Raid completely? Would a faulty raid controller give a random restart?


What kills me is the lack of of BSOD (yes, I said it). Out of the 6 days I've had this system running, I've experienced 5 random restarts [1-per-day] and only 1 reported BSOD (not set to overwrite). The one BSOD reported the error came from ntoskrnl.exe.

I'm thinking of RMA'ing a certain item but I wanted to hear everyone elses opinion first.

Thanks,
kisk

 

[kisk]

From what I've been gathering I believe the random restarts are from my memory timings....

I went ahead and changed the system loaded defaults (7-7-7-20 @ 1.5v Auto) to the 8-8-8-24 @ 1.9v N2.

Reloading the bios confirms the changes but Everest, Speccy, SIW all still show my memory running at 533MHz (DDR3-1066).. this memory is advertised to run at 800MHz.

Hopefully won't have another random restart in the night as usual...

 

[NYJimbo]

From what I've been gathering I believe the random restarts are from my memory timings....

I went ahead and changed the system loaded defaults (7-7-7-20 @ 1.5v Auto) to the 8-8-8-24 @ 1.9v N2.

Reloading the bios confirms the changes but Everest, Speccy, SIW all still show my memory running at 533MHz (DDR3-1066).. this memory is advertised to run at 800MHz.

Hopefully won't have another random restart in the night as usual...

Your previous post says:

"OCZ Gold 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)"

but now you say:

this memory is advertised to run at 800MHz.

What do you mean?. BTW: I would definitly try to get it to 800 if you can, if its doing 533 you might have something setup wrong. This ram does have known problems at 1600.

http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16820227483

 

[kisk]

I was going by speed*, not bus.

@ Bus it should be running at 1600 ... its currently running at 1066.

Just had a fella at TomsHW save my ace... the max ram voltage for the i5/i7 chips is 1.65v ... I had it set @ 1.9v for a couple mins before I saw his post and dropped it back down to 1.6.

After reading reviews of both of OCZ's 1.65 & 1.9v sticks I think I'm going to try using something else.

 

[rusty.nells]

Per JEDEC, the maximum voltage for DDR3 is 1.575 volts.

 

[kisk]

Per JEDEC, the maximum voltage for DDR3 is 1.575 volts.

That is slightly outdated. On my mobo's Qualified Vendor List alone lists quite a few DDR3's with settings of +1.9v.

RMA'd the memory I am using now and ordered some mushkin rated to run at a lower voltage. Hope this helps my random restarts.

Love the speed of this computer but I'm not about to store my business files on here till I can get it stable.