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Computer problems (turning off randomly)

Last response: in Components
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January 22, 2014 1:40:33 PM

Ok, I'm typing this on my iPad so bare with me here...
Ill start with my specs:
CPU - AMD FX-6100 OC'd to 4 Ghz
GPU - (2x) Sapphire Radeon R9 270
Mobo - Gigabyte 970A-UD3
PSU - Corsair CX750M
Misc - Windows 7, Corsair H100i cooler
Now down to business. I encountered several problems after I got the new GPUs, but thanks to someone from this sub, I got everything worked out (or so I thought). Everything was working perfectly, then I started mining (dogecoins using cgminer 7.1.2 (I think) with GPU max alloc percent at 100 and intensity at 17), went to bed, and my computer was completely shut down in the morning. Ok, weird, I started it back up, started mining, and left for a bit, came home, and it was off again. Now I know something is wrong. I turned it on and played TF2 for a little with no problems, then started playing BF4. I was playing for a good while then everything goes dark. Started it up again and ran some benchmarks with MSI Kombuster, normal fps, but it only showed 1 card being used. I started furmark and it said 2 cards available but only 1 was being used. After starting a furmark test though, my computer shut down again. Now, my motherboard has 2 PCIe lanes, but one is x16 and one is x4. Could that cause any issues? Any help would be greatly appreciated. Thanks.
a b ) Power supply
January 22, 2014 1:48:30 PM

I would monitor your Voltages. better yet swap in a known working PSU.
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a c 104 À AMD
a c 80 ) Power supply
January 22, 2014 2:06:00 PM

Two things ;

The motherboard should have two slots and both running x8 , to have one at x4 is kind of slowing the second card and when asked for more performance it's stopping the system.

Your power supply is and the way to tell is that you played a non demanding game (TF2) and when you switched to a demanding game (BF4) the problem happens , just like when trying to run a stress test (Furmark) or mining it shuts down. The system requirement for two r9-270s is a 600w power supply however the one that you have may be defective or is not putting out the necessary amps to the two main components , the CPU and the video cards.

One thing you can do is check the Event Viewer to see if it mentions what caused the stoppage.
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January 22, 2014 5:53:57 PM

inzone said:
Two things ;

The motherboard should have two slots and both running x8 , to have one at x4 is kind of slowing the second card and when asked for more performance it's stopping the system.

Your power supply is and the way to tell is that you played a non demanding game (TF2) and when you switched to a demanding game (BF4) the problem happens , just like when trying to run a stress test (Furmark) or mining it shuts down. The system requirement for two r9-270s is a 600w power supply however the one that you have may be defective or is not putting out the necessary amps to the two main components , the CPU and the video cards.

One thing you can do is check the Event Viewer to see if it mentions what caused the stoppage.


I opened Event Viewer but I am not sure where to look to see what I need to see. Also, do I need a new mobo?

Edit: Ok so I messed around in event viewer and the 'Critical' messages are all from the source 'Kernal-Power' with an event ID of 41 and task category (63). What does all this mean?
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January 23, 2014 6:42:35 PM

inzone said:
http://www.eventid.net/display.asp?eventid=41&eventno=1...

There are some suggestions on this web page.


Ok, what programs should I use to test individial hardware? I have prime-95, CPU-Z, GPU-Z, HWMonitor, Trixx, Furmark, and MSI Kombuster. Could you walk me through testing or link me to a tutorial?
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a c 104 À AMD
a c 80 ) Power supply
January 23, 2014 8:32:49 PM

The easiest thing you can do is to reset the clock on the CPu to stock and remove one of the video cards. Then run Furmark and Prime95 to test the CPU and then the video card. If these two programs are able to run and test the hardware then you'll have narrowed it down to the second video card or the CPU overclock.
You could then overclock the CPU back to the 4.0 and run Prime95 again. At this point you should have a good idea of what's causing the problem.
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January 24, 2014 4:37:07 AM

inzone said:
The easiest thing you can do is to reset the clock on the CPu to stock and remove one of the video cards. Then run Furmark and Prime95 to test the CPU and then the video card. If these two programs are able to run and test the hardware then you'll have narrowed it down to the second video card or the CPU overclock.
You could then overclock the CPU back to the 4.0 and run Prime95 again. At this point you should have a good idea of what's causing the problem.


Well... I left my computer on overnight, as I usually do, and when I woke up it was off. I didnt have any stressing programs running just chrome with a few tabs open. 'Dang, not again' I think so I walk over to press the power button, it makes a sound like its starting, and all the LEDs in the fans light up, but thats for like half a second then it goes dark again. Now I cant even turn it on. The power button is unresponsive. I know the PSU is plugged in because my receiver for my wireless headphones is lit up, which is powered by usb. So this is a PSU problem now? Or maybe mobo?
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a c 104 À AMD
a c 80 ) Power supply
January 24, 2014 8:15:46 AM

http://dodji.seketeli.com/downloads/shuttle-psu-paper-c...

You can do the power supply paper clip test which is to take the main motherboard power connector and unplug it from the motherboard , then take a paper clip and shape it like a U , take one end and push it into the hole that is connected to the green wire (there's only one) and the other end push into a hole with a black wire (any will do) this will turn on the power supply without powering the motherboard. If the power supply does not turn on then that's the defective part , if it does turn on then it's most likely the motherboard.

The link is a description on how to do the test.
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January 24, 2014 9:09:13 AM

inzone said:
http://dodji.seketeli.com/downloads/shuttle-psu-paper-c...

You can do the power supply paper clip test which is to take the main motherboard power connector and unplug it from the motherboard , then take a paper clip and shape it like a U , take one end and push it into the hole that is connected to the green wire (there's only one) and the other end push into a hole with a black wire (any will do) this will turn on the power supply without powering the motherboard. If the power supply does not turn on then that's the defective part , if it does turn on then it's most likely the motherboard.

The link is a description on how to do the test.


Ive seen that paperclip thing on a watercooling tutorial before, Ill try that when I get home and Ill edit this message with the results.

Edit: Everything turned on when I powered it up with the clip. Mobo problems then? I looked at ASUS motherboards at school because the bios seems easier for overclocking, and I found the M5A99FX PRO R2.0 on newegg (link below) do you think it would be good? It says it has to PCIe 3.0 x16 lanes, which is what I need.
Link: http://www.newegg.com/Product/Product.aspx?gclid=CIDt6K...
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a c 104 À AMD
a c 80 ) Power supply
January 24, 2014 1:12:19 PM

That motherboard looks like a good choice , before making the switch you should try updating the bios on the board that you have just to see if that makes any difference.

Just as a bit of info , you currently do not need a Pci-e 3.0 slot since no current video card can max out a Pci-e 2.0 slot , they make the newer cards Pci-e 3.0 compatible but they work just fine and at full strength in a 2.0 slot.
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January 24, 2014 3:04:16 PM

inzone said:
That motherboard looks like a good choice , before making the switch you should try updating the bios on the board that you have just to see if that makes any difference.

Just as a bit of info , you currently do not need a Pci-e 3.0 slot since no current video card can max out a Pci-e 2.0 slot , they make the newer cards Pci-e 3.0 compatible but they work just fine and at full strength in a 2.0 slot.


Ok, so I just booted up (apparently it works now) because I just got my third monitor in the mail, my first 2 are plugged in DVI to my first card, and my third one is connected to me second card, but it wont work. Could this be because of the PCIe x4?
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a c 104 À AMD
a c 80 ) Power supply
January 24, 2014 3:23:07 PM

The video card has two DVI , one HDMI and one Display Port correct ? If your monitor can connect by Display Port and DVI then you should do it that way but for a third monitor I think that you need a Active Display Port cable.

So your trying to connect by using three DVI ports? Also don't forget that you've been told by certain software that the second video card is not in use.
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January 24, 2014 4:02:59 PM

inzone said:
The video card has two DVI , one HDMI and one Display Port correct ? If your monitor can connect by Display Port and DVI then you should do it that way but for a third monitor I think that you need a Active Display Port cable.

So your trying to connect by using three DVI ports? Also don't forget that you've been told by certain software that the second video card is not in use.


Ok, so I will buy a displayport to DVI adapter and a m5a99fx pro and that should solve my problems. Yay! I dont think updating my bios would help because I would still have that x4 slot, plus overclocking would be easier (or so it seems) with the asus board. CedarPC has the board for the cheapest I can find, $96 with shipping, but ive never heard of them. Any input on that? http://www.cedarpc.com/product/43952/ASUS-M5A99FX-PRO-R...
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a c 104 À AMD
a c 80 ) Power supply
January 24, 2014 4:08:11 PM

Never heard of them.
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January 24, 2014 4:18:19 PM

inzone said:
Never heard of them.


Should I just go with newegg then? Reviews say they bought refurbished items that came with smashed boxes and missing parts and CedarPC was a real dick about returns and replacements.
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a c 104 À AMD
a c 80 ) Power supply
January 24, 2014 4:23:21 PM

I shop at Newegg all the time and would take them over CedarPc anytime.
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January 24, 2014 4:36:38 PM

Yea, it was almost a $30 price difference though. Buying it now! Thank you so much for your help, its really awesome.
PS. You don't happen to have a dogewallet address I can send anything to now do you?
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a c 104 À AMD
a c 80 ) Power supply
January 24, 2014 4:41:29 PM

No I don't and I wouldn't accept it anyway. I do this to help people. I have a lot of experience and enjoy helping those that need it. Selecting my post as the solution is more than enough.
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