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Discussion Starter #1
Hey guys, I really need help on this. For a few months now I've been troubleshooting this issue. Whenever I'm playing games (Rocket League, BF4, Rainbow 6 Siege ect.) my system eventually locks up,maybe 1 minute in maybe 1 hour in with no BSOD but the nvidia driver does fail then recover. The only game that doesn't crash my system is Minecraft whice I've locked to 60fps for nausia reasons. I've tried so many things, at first I thought it was a bad driver, did clean reinstall, also tested with 9 different driver versions. Then I tried windows reinstall, Win8.1 and Win10, no luck.

I then went onto hardware, I've got 2 gtx 980's, I changed them out and tested each, which was a problem because its all water cooled, also trying different sli bridges. I reset CPU to defaults and I've tried a few things like disabling C-states and using PciE gen 2 instead of 3.
Tried updating mobo bios and rolled it back to stock, I've also tried the 2 other bios chips on this board (EVGA Z97 Classified)

To me it seemed something was shorting out in the case, so I removed all cables and checked them over, no damage or pins out of place. I then only used the cables that I needed removing things like extensions and unneeded fans and leds, also removing case IO cables and front power and reset cables.

After many different changes alot of which I've forgotten now, I assumed it was a bad PSU (EVGA G2 1300watt) and bought another exact same, no luck either. Even changed out the power cable, power board and have tried a different wall socket.

I've also tried testing the RAM, using each stick in different slots one by one, underclocking them to 1600mhz from 1866mhz. Tried a different set aswell.

To me it still fees like a short-out, pc locks up and I have to spam Ctrl Alt Delete, for about 10 seconds to unfreeze it, after which the driver recovers.

So I tried switching monitors out and changed display cables DVI then HDMI then Display Port. Also changing out the power cable for the monitor.

I'm really leaning towards a bad mobo or maybe the wall power isnt clean enough, but that being said i had a system running for a few months with 2 780's in it running fine off the same port so i cant see how it could be that. I'll list all my parts below if it helps;

CPU: 4790K
MB: EVGA Z97 Classified
RAM: Kingston 32gb 1866mhz (4x8gb)
GPU: 2 Evga GTX 980 sc
OS Drive: Samsung 850 Evo
Games Drive: 2 Samsung 850 Pro striped together in windows
PSU: EVGA G2 1300watt

All these parts are within 6 months old.

My biggest problem is that the CPU and GPU's are watercooled with solid tubing so this is a pain to troubleshoot hardware.
If anyone has a suggestion as to something it might be PLEASE let me know, this is driving me crazy atm.

Also I (rarely) find my pc getting stuck while booting to windows, with no boot drive activity, could this still be RAM? Or motherboard? I really need a strong opinion before I pull it all apart again.

Thanks
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Did you check your temps (cpu and gpu) ?
 

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Quote:
Originally Posted by merceless View Post

Hey guys, I really need help on this. For a few months now I've been troubleshooting this issue. Whenever I'm playing games (Rocket League, BF4, Rainbow 6 Siege ect.) my system eventually locks up,maybe 1 minute in maybe 1 hour in with no BSOD but the nvidia driver does fail then recover. The only game that doesn't crash my system is Minecraft whice I've locked to 60fps for nausia reasons. I've tried so many things, at first I thought it was a bad driver, did clean reinstall, also tested with 9 different driver versions. Then I tried windows reinstall, Win8.1 and Win10, no luck.

I then went onto hardware, I've got 2 gtx 980's, I changed them out and tested each, which was a problem because its all water cooled, also trying different sli bridges. I reset CPU to defaults and I've tried a few things like disabling C-states and using PciE gen 2 instead of 3.
Tried updating mobo bios and rolled it back to stock, I've also tried the 2 other bios chips on this board (EVGA Z97 Classified)

To me it seemed something was shorting out in the case, so I removed all cables and checked them over, no damage or pins out of place. I then only used the cables that I needed removing things like extensions and unneeded fans and leds, also removing case IO cables and front power and reset cables.

After many different changes alot of which I've forgotten now, I assumed it was a bad PSU (EVGA G2 1300watt) and bought another exact same, no luck either. Even changed out the power cable, power board and have tried a different wall socket.

I've also tried testing the RAM, using each stick in different slots one by one, underclocking them to 1600mhz from 1866mhz. Tried a different set aswell.

To me it still fees like a short-out, pc locks up and I have to spam Ctrl Alt Delete, for about 10 seconds to unfreeze it, after which the driver recovers.

So I tried switching monitors out and changed display cables DVI then HDMI then Display Port. Also changing out the power cable for the monitor.

I'm really leaning towards a bad mobo or maybe the wall power isnt clean enough, but that being said i had a system running for a few months with 2 780's in it running fine off the same port so i cant see how it could be that. I'll list all my parts below if it helps;

CPU: 4790K
MB: EVGA Z97 Classified
RAM: Kingston 32gb 1866mhz (4x8gb)
GPU: 2 Evga GTX 980 sc
OS Drive: Samsung 850 Evo
Games Drive: 2 Samsung 850 Pro striped together in windows
PSU: EVGA G2 1300watt

All these parts are within 6 months old.

My biggest problem is that the CPU and GPU's are watercooled with solid tubing so this is a pain to troubleshoot hardware.
If anyone has a suggestion as to something it might be PLEASE let me know, this is driving me crazy atm.

Also I (rarely) find my pc getting stuck while booting to windows, with no boot drive activity, could this still be RAM? Or motherboard? I really need a strong opinion before I pull it all apart again.

Thanks
smile.gif
It may be something as simple as a program conflict . I used to suffer a similar problem , it turned out that my Bitdefender and Shadowplay were causing the problem . also swapped from afterburner to precision X .
 

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Discussion Starter #5
yeah i thought something like that so i removed everything but the base driver, and uninstalled anything that could access the gpu, afterburner, rivia tuner ect. and removed any overlays like steam has
 

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Discussion Starter #6
Currently I've removed the blocks and am changing them back to air cooled to try and remove any potential shorts on the backplate or waterblock. Hopefully I'm on to something as I tested a gtx 780 for a few hours and no problems came up.
 

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Run everything stock including GPU. Set ram voltage to 1.65V if using DDR3 ram, otherwize use the XMP profile votlage for DDR4

Check the position of pump. If its near any hard drive cable or near a hdd move the pump.
Magnetic field of the pump will cause sudden crashes.
Its best to also keep the pump away from any lines supplying voltage for any computer component

Quote:
To me it still fees like a short-out, pc locks up and I have to spam Ctrl Alt Delete, for about 10 seconds to unfreeze it, after which the driver recovers.
Your probally overclocking your GPU too much. It can do minutes or even up to 10hours of GPU stress test.
But in real world usage it will crash suddenly.

I had exprienced this personally, both GPU and pump plorbems
a way to fix this is to clock up mem speeds play games for whole day. No crashes then move on the next day to core overclocking
Quote:
Also I (rarely) find my pc getting stuck while booting to windows, with no boot drive activity
I had excatlly same symtoms with the pump magnetic field plorbem
 

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Discussion Starter #8
Quote:
Originally Posted by Iwamotto Tetsuz View Post

Run everything stock including GPU. Set ram voltage to 1.65V if using DDR3 ram, otherwize use the XMP profile votlage for DDR4

Check the position of pump. If its near any hard drive cable or near a hdd move the pump.
Magnetic field of the pump will cause sudden crashes.
Its best to also keep the pump away from any lines supplying voltage for any computer component

Your probally overclocking your GPU too much. It can do minutes or even up to 10hours of GPU stress test.
But in real world usage it will crash suddenly.

I had exprienced this personally, both GPU and pump plorbems
a way to fix this is to clock up mem speeds play games for whole day. No crashes then move on the next day to core overclocking
I had excatlly same symtoms with the pump magnetic field plorbem
I'm not overclocking my gpu's havent even tried yet until i get this fixed. As for the pumps they're far away from my drives especially now that I have them sitting outside my case, but in or out it made no difference. I have tried adding +10mv to the gpus at stock speeds to stop any instability but it's not a core or memory instability so far as i can see. I'm currently testing them aircooled to see if that eliminates any possibility of short circuits on the block or backplate
 

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Discussion Starter #9
So i've individually tested the 980s aircooled for a few hours each. Both times my game would crash to black screen for a second with sound freezing aswell then recover, but no driver error this time and no event log errors are showing around the time of crash. Temps are fine, never going over 70. Could this be motherboard? Or even just the CMOS battery? I've also swapped out my boot drive sata data cable, so nothing there i think. Could it be my display port cable shorting on the case? I'm kinda desperate now
 

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Reguarding to hdd cable, is it bent?
It should not be bent at all. and bedning the cable at 90degree will ruin or make the cable faulty and you'll get sudden crashes

I have no idea whats going on with display port cable shorting on the case.
Some pictures would possibly help

Does windows crash though? If its just a gpu reset and you can countiune working normall or playing games normally.
I rekon you could leave it as it is

You tried a diffrent gpu and its working properly?
Then that means you should no be having any mobo ram or cpu plorbem.
It could mean one of the 980 or both of them are faulty products. Contact evtg or get warranty
Quote:
I'm on to something as I tested a gtx 780 for a few hours and no problems came up.
 

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Discussion Starter #11
Update:
Motherboard is having trouble accepting memory. Tried a couple of different sticks, it accepted some kingmax stuff from a mates build then on a restart it didn't. When I finally got it to post and boot, I started having big issues with what I assume was the gpu driver trying to load. Uninstalled via safe mode and it still wouldn't boot correctly, screen flickering on and off, yellow and red sometimes around the edges, sometimes it would just sit on black screen or yellow or red screen (this is happening with both lots of ram) with no boot drive activity and no spike in cpu temp ( has onboard temp LED) did a few things like reset CMOS and swapped PCI-E slots, after more of the same issues I somehow got it to boot. FYI I'm testing with a working gtx 780 so there's no issue with the gpu.

I've currently got one of my gtx 980's in my mates pc and he will test that tomorrow, if that's fine he will try the other card aswell.

I've given in and ordered another Z97 Classified board and it should be arriving in about a month.I will continue to try any suggestions and see if the current issues can be fixed but atm it all just points to mobo.
 

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Discussion Starter #12
Quote:
Originally Posted by Iwamotto Tetsuz View Post

Reguarding to hdd cable, is it bent?
It should not be bent at all. and bedning the cable at 90degree will ruin or make the cable faulty and you'll get sudden crashes

I have no idea whats going on with display port cable shorting on the case.
Some pictures would possibly help

Does windows crash though? If its just a gpu reset and you can countiune working normall or playing games normally.
I rekon you could leave it as it is

You tried a diffrent gpu and its working properly?
Then that means you should no be having any mobo ram or cpu plorbem.
It could mean one of the 980 or both of them are faulty products. Contact evtg or get warranty
Sata cable is fine have tried a few different ones now, and ive kept them straight. As for the DP shorting on the case, I put a bit of electrical tape on the exposed part of the connector and still issues, so i dont think its that. Windows does crash complete system lockup at times, and as I have recently found the same happens with the gtx 780 plus more issues have popped up regarding to post and boot. I will be testing a few more things in the next few days if the system holds up and will get back to you
 

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Quote:
my system eventually locks up,maybe 1 minute in maybe 1 hour in with no BSOD but the nvidia driver does fail
Try a older Nvidia Driver. see if that solves it. Driver might be unstable.

Try resetting all the Overclocks to Stock. If it works fine after that, then something was unstable.

For the memory issue; have you tried one stick at a time. I would run a H/W diag. Could very well be a bad DIMM. Are you mixing and matching Brands? That can cause problems.

Got an old HDD sitting around? Try a repave. Maybe an OS refresh will fix it.
 

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You changed everything only hdd ? have you replaced your hdd ? coz if your pc freeze before booting to the windows then its not driver or OC problem .btw sometimes some MB have problem with some HDD .and you may try to test your pc with internal graphic if your MB have one .
 
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