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System Locking up need help troubleshooting......

post #1 of 35
Thread Starter 
Story first.

OC 3.9ghz new build. (current system showing below, except the crossfire 5830's) ran like a dream. I then installed a second 5830 and ran crossfire. No problem until I noticed more and more I have been gaming and the system will lock up. It will run fine for a while and then freeze and the sound will loop for a split second then turn into this crazy electronic buzz. Once that sounds stops the video is frozen until I reset the computer.

I though this was a BFBC2 thing but then it started doing it in NFSS. Seems to only do it after a short while of gaming. Anything from 1/2 to 2 hours. Kinda random. I thought it was the overclock on the cpu so I turned it down to 3.8ghz and it ran good for an hour until I turned it off and went to bed. The next day it did it again after an hour or so, so i turned the overclock down to 3.6ghz and now I don't remember if I noticed it now or after I ran a quick 3dMark 11 benchmark or after because 3dMark 11 froze like 10 seconds into the cycle but I noticed that my cpu fan was only running half speed.

So I though maybe it's overheating? Again I don't rememeber if 3dmark crashed before or after I fixed the cpu fan speed but i got it up at full speed again and noticed after 1/2 hour of BFBC2 my temps went from 36c cpu and 31c system to 45c cpu and 40c system. saw that and don't remember my system ever getting that warm but I know now i have 2 video cards in there and i'm sure thats heating the system up. So after that I also turned my gpu fans up and turned the overclock down to 900/1260 and after 1/2 hour I was at about 57c gpu temp.

Now I now this might having nothing to do with anything but all the facts that I know may be able to help. Oh and this was happing before I installed 4more gb's or ram but I have also recently installed 4 more gb's. any idea's. I'm running 11.2 CCC drivers and I was running these before I installed crossfire and they were running great. I played for 45 minutes or so last night with the OC at 3.6ghz and the Gpu OC's 900/1260 and it was fine for that period of time but just erks me that it's acting up after it has been running like a dream.

Thoughts?

sorry about grammer and spelling. i'm typing fast and not proof reading as i'm at work and not suppost to be on the forums. LOL
post #2 of 35
It most definitely looks like overheating, but probably not necessarily the CPU and/or GPUs. It may also be the VRMs on the graphics cards or the VRM of the motherboard (between cpu socket and the backplate), or even the PSU if it's not load-balanced properly.

To test this theory run the rig case open and with a room fan blowing cool air towards it. If the time until the crash is longer or if it doesn't crash at all then you have a heating issue. While testing use only one game or 3DMark that loops to load test, different games pose different loads, you wanna minimise variables when testing.
I don't know your particular PSU, but some have "n" +12V rails. You should power the CPU (mobo 8pin) and the two GPUs from different rails if possible so you don't overload one and leave the other idle.
If it's not heat, nor the PSU, maybe you should clean win/reinstall drivers or reinstall Win completely with all the RAM & GPUs to remove possible software gremlins.

cheers, hope it helps
Edited by dragosmp - 3/16/11 at 6:32am
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post #3 of 35
Thread Starter 
Quote:
Originally Posted by dragosmp View Post
It most definitely looks like overheating, but probably not necessarily the CPU and/or GPUs. It may also be the VRMs on the graphics cards or the VRM of the motherboard (between cpu socket and the backplate), or even the PSU if it's not load-balanced properly.

To test this theory run the rig case open and with a room fan blowing cool air towards it. If the time until the crash is longer or if it doesn't crash at all then you have a heating issue. While testing use only one game or 3DMark that loops to load test, different games pose different loads, you wanna minimise variables when testing.
I don't know your particular PSU, but some have "n" +12V rails. You should power the CPU (mobo 8pin) and the two GPUs from different rails if possible so you don't overload one and leave the other idle.
If it's not heat, nor the PSU, maybe you should clean win/reinstall drivers or reinstall Win completely with all the RAM & GPUs to remove possible software gremlins.

cheers, hope it helps
for reference here is my hardware

ram http://www.newegg.com/Product/Produc...82E16820145251
cpu http://www.newegg.com/Product/Produc...pk=955%20black
mobo http://www.newegg.com/Product/Produc...9td-pro%2fusb3
psu http://www.newegg.com/Product/Produc...=antec%20ea750
gpu's http://www.newegg.com/Product/Produc...-497-_-Product

The motherboard has were you would put the 4pin connector it is able to take a 8pin connection there too. would that mean anything? I have the 4pin connector there because I wasn't exactly sure If i just put any 8 pin connection in it. It said I could use either a 4 or 8 but i was more comfortable with the 4. worked great until the crossfire. Could the crossfire be demanding more power from the board and thats where i would need the 8 pin or something?
Edited by geazy - 3/16/11 at 6:42am
post #4 of 35
Thread Starter 
this is what mine system does except video stays on frozen as one image and has to be reset. It does this in NFSS as well so it's not a BFBC2 but i found this guys video and this is what mine does.

http://www.fragtheplanet.com/832/bat...c-crashfreeze/
post #5 of 35
Thread Starter 
Quote:
Originally Posted by geazy View Post
this is what mine system does except video stays on frozen as one image and has to be reset. It does this in NFSS as well so it's not a BFBC2 but i found this guys video and this is what mine does.

http://www.fragtheplanet.com/832/bat...c-crashfreeze/
Well I don't know about the VRM's like was said they are covered with heatsinks and don't get hot but the cpu is running at 45c while gaming and the gpu's are getting past 63c while gaming. So nothing is overheating. I pulled 4gb's of ram and am testing the computer at 3.6ghz. I played for 2 hours and all i got was a 1.5 second or so glitch that looked like it was going to do it again but didn't. At that point I got nervous and put the cpu back at stock clocks and settings and played another half hour or so without crashing. I ran prime95 with blend for 2 hours just before bed with no errors. Before the crossfire setup i ran my OC 3.9ghz for 34 hours with no errors on the same 4gbs of ram I have in right now.

So i'm going to keep going until it crashes with this setup and go from there. I'm hoping maybe the new 4gbs or ram I installed is has a bad stick or something but with that little glitch it did made me wonder.
post #6 of 35
Just throwing this out there... did you try running everything at stock sppeds/volts? I know is almost blasphemy to speak of such things on OCN but that would defintiely rule out hardware failure
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post #7 of 35
Thread Starter 
Quote:
Originally Posted by Phobos223 View Post
Just throwing this out there... did you try running everything at stock sppeds/volts? I know is almost blasphemy to speak of such things on OCN but that would defintiely rule out hardware failure
I am running the cpu and ram back at stock speeds. I am currently still overclocking the gpu's. I'm going to continue to run this setup until it crashes again. Once that happens maybe I will turn gpu's back to stock. It seems to have only started acting up around the time I added a crossfire config and added 4 more gigs of ram. Somewhere in between I tried some different OC's as well the resulted in having windows want to recover it self and things which was wierd but the crashes are so random. I can run for an hour or sometimes only 10 minutes before it crashes.
post #8 of 35
Thread Starter 
I mentioned but no one has mentioned to me whether this could be an issue or not. So could this be that I have a 8 pin connector on my motherboard and I'm only using the 4 pin 12v? My psu has
1 x ATX12V 4pin,
1 x EPS12V 8pin,

should i be using the 8pin eps12v connection because of all the power i'm using with the overclocked cpu and crossfire 5830's? would that cause it to crash randomly you think?
post #9 of 35
That's not the issue. Run memtest.
post #10 of 35
Thread Starter 
Okay. How do i run the memtest? what program do i use.
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