Computer instant shutting down.

V

Vulture

New Member
I have this problem that started to appear recently (1-2 months). The case is if i use PC normally evertying is fine but if i start a game like "crysis" or any other 3d game "COD, serious sam, etc... " the computer will just shut itself down in a instant.

Sometimes the game can run for 1 hour or more and there will be no problems but lots of the times the PC will shutdown before i could even get in the main menu (this happened in crysis - where the GPU started getting more stressed).

...
The thing is also that i hear a funny high frequency sound from my PC when the GPU starts to work more - meaning if i start a game.
...

First i thought it was PSU. So i've changed it from 550W to the new 750W.

Then the problem was still there and i changed GPU from "nvidia 9800gtx+" to new "nvidia 285gt". But the problem is still here.

I also checked for temperatures of CPU and GPU.
-CPU was at 55 degress celsius at full load.
-GPU was at 70 - 75.

Also for the aditional tests i used prime95 and orthos for CPU and RAM.

All the tests passed, no problems... and if i ran 3d mark ventage for my GPU there are no problems.




Just to mention nothing is overclocked and there is no malware or viruses on the PC.
................................

I have no ideas more what could i do. Could my MB(asus striker extreme) be the reason for all of this?
And whats the difference if i play a game or do all those stress tests and while doing stress test everything is or seems fine but if i play a game this strange thing happens?


:confused::confused::confused:
 
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Start by looking in the event viewer to see if there any entries explaining why its shutting down. Shutting down is either caused by overheating, bad hard drive or motherboard.

You said you changed power supply, a new gpu so that rules those out. Next I would test the hard drive for errors by running the drive makers disk diagnostic utility on it. Can you pinpoint where the noise is coming from?

You may want to try upgrading the bios of the motherboard. You may also have a bad video card slot.
 
I've checked the event logs.

No errors except two kinds of errors.

"The previous system shutdown at 13:36:11 on ‎11.‎3.‎2011 was unexpected."

and

"The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."

...

After every shutdown i have these 2 errors which is logical and tells me nothing new.

The disk is fine its also 6 months old. All this time i also have HD sentinel on my PC that monitors it.

For BIOS i have the latest version of it.

:/
 
The CPU temperature is a bit high at full load but I would have thought temperature issues are more likely to show other symptoms like freezing or a warning. Sudden shutdown seems more likely to be related to the power supply or motherboard. If the whine is coming from the power supply it may be from the voltage chopping circuits (not necessarily a problem but odd).

Asus should come with a monitoring utility such as PC Probe (History tab). If you record say voltages or temps, I don't know if it saves as it goes. That capability would be necessary to show issues on sudden shutdown. Worth a try.
 
if it was the motherboard it would just shut down with the blue screen of death... no whining sound...( had a bad motherboard a few years ago) it sounds like an overheating problem or the hard drive problem... but the hard drive is new so it could be your CPU... you could upgrade your CPU or just buy a new fan and heatsink and see if that stops the problem
 
Are these the temperatures on when on the desktop or when running a game?
Sounds to me like a processor or over heating problem..
Have you cleared the dust off the fans and heatsink? Are they even working?
 
I tried my own Asus PC Probe utility's recording (History tab) and it seems to record as it goes (once you start recording) rather than having to save a log. I did not simulate a crash however (that's your forte!).
 
Quiltface said:
do you have anything in your c:\windows\minidump folder (or if it doesn't exist that is good)
Click to expand...

No minidumps.


G.holmes93 said:
Are these the temperatures on when on the desktop or when running a game?
Sounds to me like a processor or over heating problem..
Have you cleared the dust off the fans and heatsink? Are they even working?
Click to expand...



Those temperatures are all at full load(100%) but i'm not running cpu fan at maximum rpm if i do that cpu temperature drops to 47°C.


joey666701 said:
if it was the motherboard it would just shut down with the blue screen of death... no whining sound...( had a bad motherboard a few years ago) it sounds like an overheating problem or the hard drive problem... but the hard drive is new so it could be your CPU... you could upgrade your CPU or just buy a new fan and heatsink and see if that stops the problem
Click to expand...


My cooler is Zalman CNPS9500...

I will try to get new cpu then. :/




One more though. Could there be a problem inside CPU core? that there can go something wrong for a milisecond and because of that there is that instant shutdown ?
 
Vulture said:
No minidumps.






Those temperatures are all at full load(100%) but i'm not running cpu fan at maximum rpm if i do that cpu temperature drops to 47°C.





My cooler is Zalman CNPS9500...

I will try to get new cpu then. :/




One more though. Could there be a problem inside CPU core? that there can go something wrong for a milisecond and because of that there is that instant shutdown ?
Click to expand...

Ok try this download HWMonitor and post a screen shot.
For posting a screen shot.
open HWmonitor and then press the print screen button and paste the picture in paint and then save it as jpg and then upload it or use the snipping tool.
 
FULL LOAD (for about 1h):



IDLE:




I also cleaned cpu fan entirely so temp is lower for 5°C.
 
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Vulture said:
FULL LOAD (for about 1h):



IDLE:




I also cleaned cpu fan entirely so temp is lower for 5°C.
Click to expand...

Wait for confirmation but I think there is something definitely wrong with your PSU.Because the +3.3V is 3.28V and the +12V is arounf 11.71V.

Wait for someone to confirm it.
 
mihir said:
Wait for confirmation but I think there is something definitely wrong with your PSU.Because the +3.3V is 3.28V and the +12V is arounf 11.71V.

Wait for someone to confirm it.
Click to expand...

If i'm not mistaken they give you + or - 10% of the rating. So it looks like its within specs. But it still could be a possibility.
 
Please post actual PSU you put in there as wattage means little. That 12V rail is dropping alarmingly although within spec (11.4 - 12.6) however this could be the cause of instability.

Please also check that you have the latest drivers and bios updates for your motherboard and Windows updates in the meantime.
 
johnb35 said:
If i'm not mistaken they give you + or - 10% of the rating. So it looks like its within specs. But it still could be a possibility.
Click to expand...
I am not sure about that what is the error gap.
But if all of the voltages are - some % then I think there might be a problem.
Check the bios voltages also and post the voltages shown in red.

To confirm try and use a friend's PSU to run your computer and then post results
 
mihir said:
I am not sure about that what is the error gap.
But if all of the voltages are - some % then I think there might be a problem.
Check the bios voltages also and post the voltages shown in red.

To confirm try and use a friend's PSU to run your computer and then post results
Click to expand...

The voltages in the bios wont help as this wont be underload. The ATX design tolerances I listed above. We need to know what exact PSU you have.
 
Well on the basis of the fact that you have tested memory and your PSU is more than adequate, I would suggest either your CPU or motherboard. The motherboard may cause these symptoms if it fails to give a 'good' signal to the PSU. In the meantime, can you please schedule diskchecks for your hard drives. Also, latest drivers? latest Bios? It could be the CPU also, as under load conditions the problem occurs. Tricky one.
 
Do you mean the GTX 285 in SLI.
Yours is a 750W PSU while a GTX 285 in sli needs atleast 800W of a good quality PSU.
I dont know about the quality of your PSU but since I have never heard the name as one of the good brands of PSU I am assuming it is not so good.


bigfellla said:
Well on the basis of the fact that you have tested memory and your PSU is more than adequate, I would suggest either your CPU or motherboard. The motherboard may cause these symptoms if it fails to give a 'good' signal to the PSU. In the meantime, can you please schedule diskchecks for your hard drives. Also, latest drivers? latest Bios? It could be the CPU also, as under load conditions the problem occurs. Tricky one.
Click to expand...

How come 750W is enough for GTX285 SLI.I dont think it is.GTX 285 consume a lot of power.And I dont even think his PSU is of bad quality.
 
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