Computer sometimes shutdown by itself

S

sizk

New Member
It's not too often, maybe once in 15 days but still I'd like to fix it.

I've stress-tested & memtested it and it went fine, the GPU is quite recent so it shouldn't be the problem. The temps are not particularly high so it's not that either.
The thing is if I try to restart it doesn't work but if I switch off the PSU and switch it back on then it works so I assume that's where the problem lies but I'd like to be sure before I buy a new one.

What do you reckon ?

Specs :
Mobo : GA-965P-DS3 rev 1.0
PSU : Antec Truepower Trio 430W
CPU : C2D E6400
GPU : Sapphire Radeon HD4550
RAM : 3 Gb PC5300
 
Yes my first thought was the PSU i'd go for a 650 w + power supply i have a corsasir tx750 and it has had no problems.
 
Little update.

I didn't get a chance to try another PSU but I installed a new OS & tested all ram sticks one by one.
I noticed it usually happens watching movies with WMP and it also happened once using Pinnacle Studio (video program) but the GPU is less than a year old and it's not really getting hot (there are 2 values displayed in Everest : dispIO = 55°C & memIO = 45°C). All other temps are fine.
So assuming it's not a GPU issue there are only 3 options left :
* CPU : I don't think it can make the comp shutdown (correct me if I'm wrong)
* Mobo : I don't know much about whether or not it can do that (can it ?)
* PSU : my best guess until now

Any idea ?
 
If the consistancy of the mobo falls under a certian percent it could cause your computer to shut down to save from anyother hardware damage. That is what happened to my brothers computer, ( he spilled water on it) The PSU was fine (we even replaced it with a thermaltake 600W, but didnt fix the problem) and the CPU was fine but the mobo wasn't. I am running the PSU that we though was the problem in, now, my GF's computer. Which is a P4 3.0GHz and it hasnt had any problems what so ever. So it is a possibility it is your motherboard. I am unsure about the CPU But my best guess is the same, if there is something wrong with it it should shut the computer down to keep from destroying your whole computer.
 
sizk said:
Little update.

I didn't get a chance to try another PSU but I installed a new OS & tested all ram sticks one by one.
I noticed it usually happens watching movies with WMP and it also happened once using Pinnacle Studio (video program) but the GPU is less than a year old and it's not really getting hot (there are 2 values displayed in Everest : dispIO = 55°C & memIO = 45°C). All other temps are fine.
So assuming it's not a GPU issue there are only 3 options left :
* CPU : I don't think it can make the comp shutdown (correct me if I'm wrong)
* Mobo : I don't know much about whether or not it can do that (can it ?)
* PSU : my best guess until now

Any idea ?
Click to expand...

CPU issues are few and far between, and almost never "just appear", if it was working at first, it is pretty damn likely that it is still going to be working fine now.

PSU is a deffinate possibility, as is your motherboard, but without swapping them out for known, working parts, you can't confirm which one of those, if either, are the cause of your problem.

What were you using to monitor your temperatures with?
 
I'm using Everest for the temps.

It's worth mentioning that it all begun a few weeks after a very wrong o/c that cost me a PCI sound card.
 
sizk said:
I'm using Everest for the temps.

It's worth mentioning that it all begun a few weeks after a very wrong o/c that cost me a PCI sound card.
Click to expand...

Overclock of what?

What did you raise the voltages of, and by how much?

Because you say it killed a PCI soundcard, I'd be looking at a motherboard problem, it is much more likely than a power supply issue if the overclock is the root cause
 
It could possibly be the motherboard. Have you gone into the BIOS and loaded optimised defaults? You could also clear the CMOS.

Otherwise I'd be looking at the PSU. Shutting down under load with no warning does indicate a PSU issue. At least it did for me (but i had a really poor quality psu at the time, I'm lucky it didn't explode and kill anything!)
 
Aastii said:
Overclock of what?

What did you raise the voltages of, and by how much?
Click to expand...
I tried o/cing the CPU, raised the frequency far too high and didn't change any voltage (yeah yeah I know...)

linkin said:
Have you gone into the BIOS and loaded optimised defaults? You could also clear the CMOS.
Click to expand...
I think I did load the optimised defaults. Will try clearing the CMOS.
Does it make sense to update the BIOS ?
 
sizk said:
I tried o/cing the CPU, raised the frequency far too high and didn't change any voltage (yeah yeah I know...)


I think I did load the optimised defaults. Will try clearing the CMOS.
Does it make sense to update the BIOS ?
Click to expand...

That shouldn't have done any damage at all, only thing that will cause you problems is if you go and raise the voltage way too high, if your processor isn't getting enough power, your system will either not start, or just hang/be unstable, it shouldn't damage anything.

See if clearing your CMOS fixes the issues first, if not, flashing the BIOS may help, can't hurt to try
 
I may have ticked the box allowing the BIOS to adjust the voltages automatically at some point in the process, does that count ?
 
Overclocking on auto voltage always uses too much voltage. It is better to do it manually and stress test to see if it's stable.
 
Ok so considering I was o/c the CPU, is it more likely the CPU got damaged or may the auto voltage have damaged the mobo itself ?
The PSU should be safe, right ?
 
sizk said:
Ok so considering I was o/c the CPU, is it more likely the CPU got damaged or may the auto voltage have damaged the mobo itself ?
The PSU should be safe, right ?
Click to expand...

correct.

Only way to find out which is damaged, if either are damaged, is to try the motherboard with known, working components, and the same with the CPU. If you don't have replacements that will work with your components, your local computer store should do it
 
Aastii said:
correct.

Only way to find out which is damaged, if either are damaged, is to try the motherboard with known, working components, and the same with the CPU. If you don't have replacements that will work with your components, your local computer store should do it
Click to expand...


Computer tech store is a sure fire way because they can put it through all sorts of test that will usually tell you everything down to which of the components, even the little chip things all over the mobo, isn't running correctly. Problem is last I tried to have some one look at my laptop they were trying to charge me like 75$, maybe it was 125$ I dont remember, but still for a poor person like me there was no way I could afford that :(
 
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