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Computer randomly restarting

Last response: in Systems
January 13, 2013 4:35:20 PM

Hey! This will be my first time posting on the forums, so hopefully this is in the right section.

I upgraded my computer about 2 weeks ago, replacing the CPU, Motherboard, RAM, and adding an SSD. Here's my specs:

OS: Windows 8 Professional 64-bit
CPU: Intel i5-3570k
Heatsink: Zalman 120mm cooler
Motherboard: ASUS PZ877-V Deluxe
Memory: Corsair Vengeance 16GB (2 x 8) 1600 MHz
SSD: Kingston Hyperx 128GB
HDD: Western Digital 500GB
PSU: CoolMax 700W

The graphics card is 1 year old as of January, while everything else is at least 2 years old. After I put the computer together and got everything running, I overclocked my CPU to 4.5 GHz at 1.26V. I ran Prime95 for at least 12 hours in Large FFTs and it was stable with temps reaching 80C+. As of yesterday, my computer rebooted itself randomly while watching a video. After it rebooted, I logged into Windows 8, and within 1-5 minutes upon startup, it rebooted. It followed the same trend for the next 30 minutes or so, and I noticed that it would reboot when the CPU usage rose too high. I checked all the plugs, reapplied thermal paste to the CPU, reset the GPU and memory. After doing so, I was able to make it into the OS, and everything seemed normal. The problem happened again maybe an hour before posting this, and to temporarily solve it this time, I reset the OC back to default 3.4-3.8 and set the voltage back to default.

As of right now, everything seems fine. I want to overclock again, but I'm unsure as to if the problem was I did not overclock correctly, the PSU may be dieing, or the motherboard/memory could be faulty. I have not ran Memtest86+ yet, but I would like some input as to if that's the problem or not. Thanks!
January 16, 2013 2:51:47 AM

Sounds like you have it over-heating. 3.4 to 4.5 seems like a pretty big jump, especially considering the .022 die size of the CPU. Maybe you can do this (I don't overclock much), but I would consider a water-cooling system.

Best solution

a b B Homebuilt system
January 16, 2013 3:50:59 AM

it may be overheating if you think it is then reapply the thermal paste and try and lower the volts to a level where it is stable(lowest volts possible)

and get ready :p 

1) are your drivers updated?

2) Try updating your bios [...] pdate-bios

3) How old is this build?

4) Could it be over heating?

5) try running a GPU and CPU stress tester(use seperately) and monitor temps with gpu-z(for graphics card temp) and core temp(for cpu)




5) Could your ram be having issues? run memtest

6) Check your hard driver/SSD
-Start menu
-Right click main disk(for me it is C
-Error checker

7) Run burnintest

8) After it crashes run who crashed

hope this helps :D 

note: this seems to be happening more and more offten and I think it is the motherboard because for 2 out of 3 i have solved it has been motherboard so be sure to do everything i just showed you... then after none of this works try and see if you can rma your motherboard(if it still has coverge)
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January 23, 2013 3:38:33 AM

Sorry for the delayed response, I completely forgot. :p 

My temps are completely normal as far as I've read upon. The cooler I have is only a single fan compared to the dual fan air coolers out there. I replaced my PSU with a Corsair TX850M, and it's been running flawlessly for over a week now. I think with my old hardware, the PSU wasn't being stressed; but when I essentially redid my rig, I didn't replace the power supply, which may have lead to too much stress on it after overclocking. With the amount of power the overclock and the beastly 580 draws in, it must of lowered the effeciency of my old PSU and was probably slowly killing it.

I've been stressing the system with gaming and such, and it hasn't had any problems. So hopefully it was just the old 700W PSU, and I'm all good to go.
a b B Homebuilt system
January 23, 2013 4:02:34 AM

awesome :D  glad i could "help" :p  and its ok for not replying im glad you were able to fix it... oh and dont forget to pick a best answer here will make a post you can select so that people who look at this know the answer
a b B Homebuilt system
January 23, 2013 4:03:24 AM

I'm surprised it was your power supply, makes sense though I guess that your old one was just not efficient enough? oh well what brand was it anyways?
January 23, 2013 4:41:17 AM

All of the PC specs are in the first post:

PSU: CoolMax 700W

CoolMax isn't the best brand, so making a jump to a high quality PSU with Corsair helped minimize the power consumption and maximized efficiency.

I essentially did everything that you posted after starting this thread itself; no memory issues, no SSD/HDD issues, no CPU issues and no GPU issues.

Again, I'm just assuming that the CoolMax PSU couldn't handle the overclocked CPU and the amount of power the GTX 580 needs compared to the new 600 series cards. If I had a 680 instead, it may have had less problems, but I think I'm in the clear. :D 

January 23, 2013 4:42:00 AM

Best answer selected by Reese227.
a b B Homebuilt system
January 23, 2013 7:47:50 PM

yeah i recommend this psu
I have the 850w version and it runs like a dream absolutely no problems for 9 months as along with overclocking everything to the absolute max it will go(this included a fx-8120 which just EATS the watts) anyways hope this helps and im glad i was able to help you fix the problem :D