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PC restarting but only during gaming and only with SLI - Page 3

post #21 of 28
Thread Starter 
Quote:
Originally Posted by 78@pwnt4lif3 View Post

Do the basics! Check your connectors if they are LOOSE and even the PSU needs to be tested. Not to mention your SLI connector too.

Could be your motherboard, or Ram or Video card.

Test it on a different system if you have backups. I hope you get it fixed.

Normally it would have been a driver issue but i have a hunch it could be your PSU or motherboard or the SLI profiles.

I wouldn't know cuz i don't run SLI anymore. Used to years ago. Had two GTS 250's Ahh the good old days biggrin.gif

Connections have been checked, PSU. Motherboard, sli bridge, and ram have been replaced. Both GPUs have tested fine in other system. All drivers are up to date. BIOS is up to date.

Quote:
Originally Posted by ep45-ds3l View Post

Hmm.. I was having an issue in BO2 and BF3 where my PC would just go black screen randomly, but Torch Light 2 and BL2 were not affected. Running GTX 580s SLI at stock speed with the latest drivers. Tried everything to fix it. The only solution I could find was to up the volts in MSI AfterBurner and my problems went away. Or to run as you did with SLI off. Well after a while of my GPUs being unnecessarily over volted in SLI, I decided to reinstall my Acronis backup of Windows 7. Then deleted the old Nvidia drivers I had on the backup and installed 314.07 drivers. Now, no crashing no black screens and no more overvolting.. Everything runs as it should.. So, you can always try a fresh reinstall, hopefully you have a decent either full or incremental backup you can load from.. Just my .02

I have been wondering about this and may try adjusting volts / stocks on cards to see if that gets me anything.

Yep. I most certainly have backups of everything. I will be trying a clean install tonight. (going to be a long night. Will get some vodka on way home. biggrin.gif)

Thanks for all your input. I will update this later.
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post #22 of 28
Thread Starter 
Update. I had case on it's side to look at PSU fan and found something interesting. With intake fans exposed to open air, and with assistant fans wide open, I do not get lockups. If I turn down assist fans, I get lock ups. If I have tower right side up (with only 1-2 inches of clearance to my desk, I get lockups.)

This leads me to believe motherboard is overheating. Since this is a replacement motherboard and first motherboard had same symptoms, this leads me to believe that this is a design flaw in the motherboard or possibly the thermal armor design. Since I can find no similar reports anywhere, I am thinking it must be the unique combination of my case, motherboard, and GPUs causing it. (ie GPUs spewing hot air into case). When I tested older hotter reference cooler 580s, I still had lockup issue but it was without motherboard fans and took longer.

So it looks like my options are:

1. Make a stand to lift case higher off desk and jack up those annoying little assist fans.

2. Try a more aggressive fan profile on GPUs. (Since I get no lockups with CPU stress test, I am inclined to believe overheating component is more near GPU side of things. My thinking is if GPUs do not get as hot, motherboard will not either.)

3. Remove thermal armor to allow direct air from case fans to pass over motherboard.

4. Get a less gimmicky motherboard.

1-3 are free options, but 4 is perhaps most foolproof. I really like the features of ASUS boards, but if they are not stable using advertised features(SLI, armor , etc), it becomes a moot point. I'm not completely opposed to buying another ASUS or buying something else. What do you guys think? Any suggestions for good Z77 motherboard? (The more USB3 and the best layout for SLI / soundcard preferred).
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post #23 of 28
Have you any space to install extra case fans. Also, what cooling setup do you currently have? Positive or negative pressure? I only skimmed through the posts, so this may have already been suggested.
post #24 of 28
did you end up doing a fresh install?
Intel drivers are notoriously hard to remove or install if you are using a hard drive from your old build.

I have my old HD plugged in and every once in a while I boot from it and notice how utterly slow it goes on my RIVE 3930k 5GHz compared to the same OS on another drive. Random reboots during gaming were common until I used the fresh install with latest drivers.

SLI also needs a lot of power, check if your motherboard has an extra plug for multi-GPU power. this is definitely required as the cards can draw up to 300w each from the motherboard pci-e 3.0. they take up to 150w ea from the two 6-pin inputs but if your power target is high they will draw from the board under load, and 24 pin ATX cant cut it so Asus and other manufacturers regularly place 4 pin molex, 6pin pci-e or even 8-pin pci-e possibly in future on their boards to supply additional power for multi GPU.

You could also try running your ram at Intel specifications at 1600MHz or less with stock CPU and voltage. anything above 1600MHz usually requires VTT VCCSA and PLL voltage adjustment and that can affect intensive processes.

If available when over clocking use DIGI+ power control to increase power limits for ram and CPU after confirming stability at stock settings.

use prime 95 custom run with 13000MB memory target to test memory stability at 1600MHz or less with stock CPU to confirm before testing sli that your memory isn't to blame, then run heaven benchmark on full detail.
post #25 of 28
Had the same exact problem last year, in my case it was the PSU...good luck!
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post #26 of 28
Thread Starter 
Update: Looks like problem is resolved.

I noticed a trend in thermal radar where VCCSA temp would gradually rise until it hit around 70c and that's when lockup would occur. Efforts to keep temp down with aggressive GPU and case fan profiles seemed to corroborate this. I also noticed even at idle, VCCSA would sit around 50C idle.

I had noticed there is a VCCSA voltage in BIOS. For poops and giggles I changed this from AUTO to its lowest value possible (0.8). To my surprise this dropped VCCSA temp almost in half even without the aggressive fan profiling.

Even more amazing- No more lockups. Even with full load and fans on low, max temp on VCCSA is now only 40c.

I don't know if dropping VCCSA that low hurts anything. I couldn't find anything on google that says it does. I have done tests in Heaven, prime95, and previous games that crashed and everything seems to be working fine.

Amazing to go through all of that and solution be one little setting in BIOS.

Here is temps before change:


Here is after manually setting VCCSA voltage to lowest value
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post #27 of 28
VCCSA is linked to RAM, if your RAM runs above 1600MHz it usually increases in voltage. what might have been causing your lock-ups or restarts was that the Asus auto vccsa was out of range of your CPU and/or ram voltages.

There are plenty of overclocking guides out there for z77/3770k and I think they are well worth a read for anyone who has OC memory. I think the general rule was VCCSA within .3-4v of CPU and .5v of RAM otherwise Intel says you will get instability and even damage your CPU.

Try changing your OC profile (after saving/jotting it down!) to one of the XMP Profiles of your memory and it should adjust the VCCSA CPU and DRAM voltages automatically as well as PLL and BCLCK. Sometimes the voltages in XMP profiles are a bit too aggressive and can be just as bad as auto mode.
post #28 of 28
Thread Starter 
Quote:
Originally Posted by Phirebird View Post

VCCSA is linked to RAM, if your RAM runs above 1600MHz it usually increases in voltage. what might have been causing your lock-ups or restarts was that the Asus auto vccsa was out of range of your CPU and/or ram voltages.

There are plenty of overclocking guides out there for z77/3770k and I think they are well worth a read for anyone who has OC memory. I think the general rule was VCCSA within .3-4v of CPU and .5v of RAM otherwise Intel says you will get instability and even damage your CPU.

Try changing your OC profile (after saving/jotting it down!) to one of the XMP Profiles of your memory and it should adjust the VCCSA CPU and DRAM voltages automatically as well as PLL and BCLCK. Sometimes the voltages in XMP profiles are a bit too aggressive and can be just as bad as auto mode.

With XMP selected, it WAS on auto mode. Unless someone can present hard proof that that lower voltage can damage something and unless it starts acting up again, I'm not changing a thing tongue.gif
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Raven 2012
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BigHeavy 2009
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveOSMonitor
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