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Possible RAM problems

post #1 of 10
Thread Starter 
I built myself a nice x58 rig back in the fall with the following components:
i7 930
OCZ Gold DDR3 1600 Mhz RAM (3x2GB)
Asus P6TD-E Motherboard
Gigabyte GTX 460
WD 1TB Black HDD
Corsiar h70 cooler

I recently added on a HT Claro Omega sound card, and I overclocked the CPU to 4.3Ghz @ 1.35 volts in bios, vdroop put that down to 1.3325, RAM was just a tad over the rated speed with 8-8-8-24 timings. Everything was perfectly stable for 48Hrs prime 95 running on all cores, temps stayed below 60C the whole time. Graphics card was OC'd a bit (850Mhz core, 2Ghz shader).

A few days ago my computer randomly shut off, like as if someone had pulled the plug on it or something, I assumed it was an issue with the circuits in the house or that I'd blown a breaker or something, so I just re-booted and went about my business, it happened twice more over the course of the past 2 days, I got slightly suspicious, so I plugged the computer into a different outlet, it then proceeded to do it's hard shutdown again, I checked the logs, found no errors from windows or any of my hardware. I was watching a livestream on Justin.tv just a couple of hours ago and it did it one last time, i went to go re-boot the system and nothing happened, blank screen, no HDD activity, no post, no nothing, just a little glowing memory error light...

For the past while I've been troubleshooting the problem and trying to find a solution, it seems that it's either the motherboard or the RAM, I'm not sure what was causing the hard shut downs, or if that was a symptom of the root problem, or the cause of the problem. If anyone with more experience with this problem could give me some help I'd be very grateful, any educated speculation would also be welcomed.
post #2 of 10
you should shut of auto reboot on BSOD, also check the windows management logs, this could very well be bad ram.

Also download / burn memtest 86+ to a cd, then boot from it and run it over night.
Core
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CPUMotherboardGraphicsRAM
i7 920 D0 @ 4.0Ghz Asus P6X58D-E Diamond XOC 4870/512 @ 800//4400 Corsair 3x4gb DDR1600 
Hard DriveOptical DriveCoolingOS
2x500GB WD RE2 Raid0 Asus Combo, Asus Combo Corsair H80 Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
HP 2408h Wide Saitek Eclipse II Corsair HX850W Antec 900 Two 
MouseMouse Pad
Logitech Mediaplay Cordless Black as in Dark abyss 
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Core
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 D0 @ 4.0Ghz Asus P6X58D-E Diamond XOC 4870/512 @ 800//4400 Corsair 3x4gb DDR1600 
Hard DriveOptical DriveCoolingOS
2x500GB WD RE2 Raid0 Asus Combo, Asus Combo Corsair H80 Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
HP 2408h Wide Saitek Eclipse II Corsair HX850W Antec 900 Two 
MouseMouse Pad
Logitech Mediaplay Cordless Black as in Dark abyss 
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post #3 of 10
Thread Starter 
@Killam0n
I'm not getting BSOD, if I was I would have said I'm getting BSODs and specified the error code, I have in the past had a couple BSODs, both error codes indicated that the RAM was at fault, at the time I had clocked the speeds up a bit (but not increased any voltages), so i clocked it back down again and no more BSODs.

I'll run memtest (probably from a USB stick) as soon as I can get it to POST, which it is now refusing to do.
I was able to get it to boot up after reseting the CMOS with the battery trick as the CMOS reset switch didn't seem to do anything. If the RAM isn't dead, and it turns out to be a PSU issue, how would i go about testing that? (btw the one time i was able to get it too boot I ran prime 95 for a couple hours and kept a log of the voltages/temps/core speeds, everything was stable with a max temp of 53*C and core voltage of 1.25 @ 3.2Ghz)

As stated, my RAM is OCZ, does anyone have any specific tips on how to get fast RMA service just in case it turns out to be a memory problem
post #4 of 10

you could try just using 1 stick of ram in slot 1. then try the other stick in slot 1.
-If still no post get a stick of known good test ram.

To test PSU:
Unplug everything from the PSU except the wall power, then jump green wire to a black ground wire and the PSU should power on, fan should turn on.

you could prolly take it to a local pc shop and have them run through some parts testing, or just ask them to put a stick of ram in it and see if it posts.

PSU Test-


Edited by Killam0n - 5/4/11 at 2:59pm
Core
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 D0 @ 4.0Ghz Asus P6X58D-E Diamond XOC 4870/512 @ 800//4400 Corsair 3x4gb DDR1600 
Hard DriveOptical DriveCoolingOS
2x500GB WD RE2 Raid0 Asus Combo, Asus Combo Corsair H80 Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
HP 2408h Wide Saitek Eclipse II Corsair HX850W Antec 900 Two 
MouseMouse Pad
Logitech Mediaplay Cordless Black as in Dark abyss 
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Core
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 D0 @ 4.0Ghz Asus P6X58D-E Diamond XOC 4870/512 @ 800//4400 Corsair 3x4gb DDR1600 
Hard DriveOptical DriveCoolingOS
2x500GB WD RE2 Raid0 Asus Combo, Asus Combo Corsair H80 Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
HP 2408h Wide Saitek Eclipse II Corsair HX850W Antec 900 Two 
MouseMouse Pad
Logitech Mediaplay Cordless Black as in Dark abyss 
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post #5 of 10
Most of the time you would get a BSOD with a nice meaning full code if the RAM is causing problems. Anyway a memtest check never hurts.
But like the thoughts of Killam0n lead in a good direction. If the PSU has problem (and we aer speaking of bad ones) the Windows has no chance to warn/BSOD-code you.
/* Redemption*/
(14 items)
 
  
CPUMotherboardGraphicsRAM
I7 3930K Asus Sabertooth Asus GTX 680 8x4GB G.Skill@1337MHz 
Hard DriveOptical DriveCoolingOS
2xM4 64GB/ / F3 - 1TB / 2x2TB Baracudas some LG Modified EK 360 HFX 2x(Win7 x64) 
MonitorKeyboardPowerCase
SyncMaster P2770HD and SyncMaster 940NW Roccat Isku Corsair Gold AX750 NZXT 810 Switch 
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Rocat Kone[+] Razer exactmat X 
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/* Redemption*/
(14 items)
 
  
CPUMotherboardGraphicsRAM
I7 3930K Asus Sabertooth Asus GTX 680 8x4GB G.Skill@1337MHz 
Hard DriveOptical DriveCoolingOS
2xM4 64GB/ / F3 - 1TB / 2x2TB Baracudas some LG Modified EK 360 HFX 2x(Win7 x64) 
MonitorKeyboardPowerCase
SyncMaster P2770HD and SyncMaster 940NW Roccat Isku Corsair Gold AX750 NZXT 810 Switch 
MouseMouse Pad
Rocat Kone[+] Razer exactmat X 
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post #6 of 10
This really sounds like PSU or maybe motherboard to me. If it was any other component you would BSOD pretty much everytime. If it happened once I would say there was a chance it could be something else but if it keeps just dying it is most probably psu but could be the motherboard dropping power to everything for some reason.
Hi5
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 750 4.0ghz @ 1.36v Asus P7P55D 5850 @ 970/1200 G.SKILL 4Gb 1600-7-8-7 @ 1900-7-9-7-24-1T 
Hard DriveOSMonitorKeyboard
Intel X25-V 40Gb + 1Tb Windows 7 x64 2x24" Samsung Syncmaster Cherry G80-3000LSCGB-2 (Mx- Blue) 
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Hi5
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CPUMotherboardGraphicsRAM
i5 750 4.0ghz @ 1.36v Asus P7P55D 5850 @ 970/1200 G.SKILL 4Gb 1600-7-8-7 @ 1900-7-9-7-24-1T 
Hard DriveOSMonitorKeyboard
Intel X25-V 40Gb + 1Tb Windows 7 x64 2x24" Samsung Syncmaster Cherry G80-3000LSCGB-2 (Mx- Blue) 
PowerCase
TX650W HAF-932 
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post #7 of 10
Thread Starter 
Thanks a lot for the help guys, it's a totally sporadic issue, and it's starting to happen a heck of a lot more often, I've run memtest, prime95, a whole bunch of GPU tests, some super heavy duty full system test with iray (GPU + CPU physically accurate raytracing rendering engine), all of these run perfectly fine with no errors for hours on end, however sometimes it randomly crashes (black screen, like power plug was pulled, no BSOD). I'm able to get to boot by reseating ram, resetting cmos via battery, and unplugging and plugging back in the 24pin power connector (while PSU is unplugged from wall ofc).

Anyways, I'm starting to think that it's definitely a PSU issue, if could be the motherboard too, as sometimes I get a boot loop with no power to the CPU fan (like 2 seconds on, 3 seconds off, looping over and over). Anyways, I'm really hoping it's a PSU issue, however the crash typically occurs when I enter windows, which is surprising to me if it was a PSU issue.

If it is an issue surrounding power to all components or a specific component, what would be the best way to diagnose this, without an extra PSU/mobo. I've ordered new RAM (as i need another 6gb anyways, so just a bonus if that's the problem).

CPU-Z reports that the CPU power is stable at whatever voltage I set in the BIOS, with little or no V-droop, the 16 phase power delivery system from Asus seems to be working as intended. All my temperatures remain well within the safe zone, and when I go into the hardware monitor in my BIOS the voltage outputs from the various rails all are within the "acceptable" ranges, with the 12 volt rail about .1 volts short, and the 5v rail .02 volts short, all the rest fluctuate right around their rated voltages.

The PSU is a corsair 850watt modular, it's got nice jap capacitors and all that jazz, it's no cheapo rosewill offbrand crap, however PSUs do fail no matter how well they're built ;-(


I'll try the PSU test suggested above, if it doesn't pass I'll RMA or order a new one.

Thanks all for the awesome help
post #8 of 10
Thread Starter 
btw, the system seems more likely to boot and less likely to crash on login in safe mode, that's how I made the post above, this post i'm writing after reseating ram, resetting bios, and underclocking the memory to 800mhz (it's rated at 1600)

I'm looking at CPU-Z right now, and the CPU core voltage seems to be jumping up and down, I do however have the intel stepping and powersaving features enabled, I'm going to run a burn test and see if it stabilizes the voltage or causes a crash.

update:
With prime 95 or intel burn test running, the CPU voltages stabilizes at 1.24 volts, no variation at all, totally locked in, I'm unable to read the memory or other voltages, anyone know of an app that allows me to read RAM, ich, and other voltages?
Edited by xaque42 - 5/29/11 at 9:20am
post #9 of 10
Thread Starter 
Just downloaded hardware monitor from CPUID, system seems to be running fine, 3.3v rail is running at 3.28v, 5v rail is running at 4.87v, 12v @ 11.88v, and vin6 @ 1.11v, vin1 @1.62v

None of these values seem uncharacteristically off, however I've enabled logging, so that if something's going wonky and causing a crash, I should be able to find out what's going on voltage wise.
post #10 of 10
Thread Starter 
Another update:
system has crashed 3 times, once while doing nothing (i was making tea), once while just watching a youtube video, it crashed when I hit the fullscreen button, the third crash happened in the middle of a starcraft 2 game, not during anything intense or what not, and I play with all settings on low so it's not like it was a crash due to instability (or at least it didn't appear so).
Anyways, after basically re-building the whole system, I got it to boot properly, quite a few times it just crashed when I was logging in (got to the logon screen, typed in my password, hit enter, and then the welcome thingy comes up for a couple seconds and then boom dead). It doesn't crash if I type in the wrong password, which is weird, I'm going to re-install windows via USB flash drive sometime today, I think that will solve the crash on login problem if not I'll try booting from an Ubuntu stick that's lying around somewhere.

@Stevinchy,
If it is a PSU, would it refuse to boot if I clocked the RAM to stock speeds (which it is doing), and crash on login, and randomly, and what specific test could I run to know for sure that it's the PSU, I have a new PSU that I can try out in the mail, it'll be here in a few days, if that solves all my problems I'll definitely thank you a million time.

What would some of the other symptoms of a strange motherboard issue be?
And also, would updating the BIOS be of any help? (I haven't gotten around to doing that yet).
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