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Random Shut offs!!

post #1 of 7
Thread Starter 
Hi all,
My PC was working fine until yesterday when while I was playing a game it just randomly shut down, like a manual shut off. I tried to switch it on but after 15 secs it shut off again. I left it overnight cos I thought it was an overheating problem but it offed again after about 3 mins. I reset the CMOS too. Before I OCd it to 3.4GHz using stock cooling now its at 2.4GHz. Im stumped as to whats wrong, I even changed the thermal heat pad for some arctic silver but no success.
PS. Does OCing damage the CPU cos I think thats what may have happened although ive never heard of that happening even though intel says it could
Thanks for any help
post #2 of 7
Hi.

How long prior to this problem was your system running smoothly?

You are currently at stock specs, and the system is still shutting off?

Have you used various utilities to monitor the temperature of the core, mobo, etc? Are they within tolerable limits?

Have you plugged all ancillary power plugs into the mobo?
(I ask that as I was having the same issue with an AMD system (A8n32-SLI Deluxe, but once I plugged the molex "E-Z Plug" in it ceased).

Do you have another PSU you could try out for a day or so?

OC'ing can cause damage to a CPU. How much voltage did you have running through the core? ...and again the temp?
Flux
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Flux
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CPUMotherboardGraphicsRAM
i7 2600K GA-P67A-UD7 GTX 580 2 x 2GB Corsair 
Hard DriveOptical DriveOSMonitor
C300 (OS), Velociraptor (storage) Lite-On W7 64-bit Pro Samsung 275T 
KeyboardPowerCaseMouse
Black Widow Ult. Silverstone DA750 Lian Li T60 R.A.T. 7 
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post #3 of 7
Thread Starter 
Ive had the system running smoothly for 3 months now, even at stock speeds the system shuts off, the temps are OK, not great but not too hot. When I OCd it, the temps were >65 C and at stock less than 50C, My vcore voltage was about 1.5 Volts I think, cant remember. Unfortunately I dont have a PSU i could try out but ill have to recheck all the connections again, the power to the CPU is alright, because I can get to windows desktop sometimes which makes me wonder whats wrong??
post #4 of 7
You stated, "were >65C"... this is the load? what utility were you using?

That is hot.

1.5Vcore is pushing it.... but I am not certain if that is enough to cause damage.

Hmmmm... I wonder if you did indeed bugger the CPU...?

Anyone?
Flux
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K GA-P67A-UD7 GTX 580 2 x 2GB Corsair 
Hard DriveOptical DriveOSMonitor
C300 (OS), Velociraptor (storage) Lite-On W7 64-bit Pro Samsung 275T 
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Black Widow Ult. Silverstone DA750 Lian Li T60 R.A.T. 7 
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Q-Pad 
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Flux
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K GA-P67A-UD7 GTX 580 2 x 2GB Corsair 
Hard DriveOptical DriveOSMonitor
C300 (OS), Velociraptor (storage) Lite-On W7 64-bit Pro Samsung 275T 
KeyboardPowerCaseMouse
Black Widow Ult. Silverstone DA750 Lian Li T60 R.A.T. 7 
Mouse Pad
Q-Pad 
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post #5 of 7
Thread Starter 
it reached 65C under heavy load like Prime95 but i only used it once or twice, usually temps were 40C, I was using the asus thingy software that comes with the mobo to measure temps

EDIT: if the CPU did overheat the system usually restarted afted a BSOD thats when I was using Prime 95 but this time it just shut off
post #6 of 7
hmmm.... using the software that came with the mobo may have been mis-leading.

Is it Asus PC Probe?

I have been using TAT. It reads about 5-6C higher than other utlilities as it reads directly from the core, whereas other utilities read sensors that are in close proximity.

It is water under the bridge at this point....

Since you are unable to swap components out, you might want to strip all unecessary hardware from the power line(s), reset all settings to default/stock and see if the problem persists.

It could be the PSU. Do you have a multi-meter? If not what are the ratings that the monitoring software provide (3V, 5V, 12V...)?

If it does continue, and the PSU is doing it's job you may want to consider RMA'ing your processor....

...sorry... probably not what you wanted to hear.

At this point I would say CPU or PSU....

Does anyone else have something that they could add?

P.S. Is there a bare wire that is intermitently grounding out?
Flux
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K GA-P67A-UD7 GTX 580 2 x 2GB Corsair 
Hard DriveOptical DriveOSMonitor
C300 (OS), Velociraptor (storage) Lite-On W7 64-bit Pro Samsung 275T 
KeyboardPowerCaseMouse
Black Widow Ult. Silverstone DA750 Lian Li T60 R.A.T. 7 
Mouse Pad
Q-Pad 
  hide details  
Reply
Flux
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K GA-P67A-UD7 GTX 580 2 x 2GB Corsair 
Hard DriveOptical DriveOSMonitor
C300 (OS), Velociraptor (storage) Lite-On W7 64-bit Pro Samsung 275T 
KeyboardPowerCaseMouse
Black Widow Ult. Silverstone DA750 Lian Li T60 R.A.T. 7 
Mouse Pad
Q-Pad 
  hide details  
Reply
post #7 of 7
Thread Starter 
thanks for your help Syrillian but ill check up on my PC and let you know
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