Computer turns itself off and back on

May 24, 2009 at 05:12:25
Specs: Windows XP SP3
Hello there,
I have a problem with my computer, it just turns itself off whenever it wants. I mean i can be surfing the internet and it turns off, i could playing a game and it turns off.
I just bought this PC a while ago and it was all fine until it started this weird behavior. Before it used to freeze but i resetted the BIOS (taking out the little battery inside and putting it back in) and it stopped freezing but i still have a problem with the turning off. There is no message about the reason and I turned off the function: System Failure, No automatic restart, but it still happens.
My CPU is on a average 30 degrees celsius but when i play games it sometimes goes to highest 50 degrees. I have a 700W PSU. If there is any other information you want to know that could help, please ask, I know mostly everything about this PC. I am ready to do a new Windows, just to help out (it normally solves most problems with PCs). I bought a PC but it isnt a package (everything is bought by my wish), so i cant type in the Manufacturer and Model.

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#1
May 24, 2009 at 06:59:11
It's probably a overheating (hardware) problem. You should bench test all the components and see if everything works properly.

EEOC


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#2
May 24, 2009 at 07:30:44
(1) Your cpu tempertaures appear to be OK(did you check them in the BIOS ?), but you're video card could be overheating. What video card do you have ?
(2) I would download and run memtest to check the RAM. What type and how much do you have ?
(3) What are the specs on the psu ?

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#3
May 24, 2009 at 07:47:04
i have an ASUS AI Suite and that tells me the temperatures of the CPU
My video card is EAH 4850 (it has a huge fan so i dont think its overheating)

I have 4GB of DDR3 ram but as i have a 32-bit version of Windows XP, it only shows 3.25GB, so what do i enter in the memtest?

specs on psu, so i need to open the PC and look on my psu right?
what information do you need from the psu?
and it has 650W not 700


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Related Solutions

#4
May 24, 2009 at 08:05:34
"so what do i enter in the memtest?"
You don't enter anything-you download from http://www.memtest.org/ and burn the ISO to a CD-you can then boot to the CD and memtest will run.
"what information do you need from the psu?"
Does it have multiple +12v rails, and what are the amps ?


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#5
May 24, 2009 at 11:04:20
ok, so i have done as you asked me to
(thank you for helping me by the way)
and these are my results from the memtest (i had to take a picture as Print Screen wouldnt work)
here is the link: http://img507.imageshack.us/img507/...


and i have found some information on my psu but wasnt sure if thats what you wanted but i have the model of the psu: EZcool super silent atx-650jsp
i found on it this info:
24 pin: 12, +12V 2 + Sata cables

and i also found this:
230V~,5A,50Hz

thank you for your help


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#6
May 24, 2009 at 11:14:10
You should probably let memtest run longer than 1 pass through-what you posted showed no errors.
How many amps on the +12V rail ? I did a google search but have not been able to determine that.

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#7
May 24, 2009 at 13:39:42
ok i took another picture of my PSU (all the information i have on it), to make it easier because i do not have a clue what you want :? (sorry about the flash, but its night right now)
heres the picture of the PSU: http://img25.imageshack.us/img25/57...

and also i will run the memtest tomorrow 3 times, because one takes 1 hour to do, and tomorrow i will be quite busy, so i can leave the computer running (its late now)


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#8
May 24, 2009 at 14:03:38
i think i found one of the sources it does that, well basically i turned it on and then i gently hit the top of the pc with my hand and it turned off!!!!!! i dont why it happened but sometimes i dont hit it and it turns off.

i went to a technician before (where i bought the pc from) and he said it was something wrong with 1 of the harddrives, but he was wrong because i unplugged it to test it, but it still turned itself off. it really gets annoying, because i was typing this message it turned itself off and i had to retype this again. grrr....


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#9
May 24, 2009 at 15:03:12
You have 20A on each +12V rail. I guess that's adequate for your components-in particular the video card, but I'm not sure.
"and then i gently hit the top of the pc with my hand and it turned off" That could indicate a loose connection somewhere-check all of the cables and resecure tham if necessary.
"but he was wrong because i unplugged it to test it, but it still turned itself off" You unplugged it while it was on ?

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#10
May 25, 2009 at 05:16:07
"You unplugged it while it was on ? " - no i had it unplugged for about 2 days now (i always do stuff with my PC inside when its off). I had this problem for the last 2-3 weeks now, i could live with that but now its too annoying.

Ok i will check all the cables and try to change the main cable (electricity input).

Thanks again


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#11
May 25, 2009 at 05:38:01
ok i have done it but it still does that, so i give up, i am calling for a technician to come to my home.

Thank You for your help anyway!


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#12
June 4, 2009 at 12:43:06
actually it was the motherboard that was causing this.
so now my sister came back from holiday so i finally have a computer to use (but have to share) so i'm gonna get it replaced soon!

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