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Computer unexpected shutdowns


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#1 Kiririn

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Posted 09 February 2013 - 11:15 AM

The computer will run fine for a few hours then it will close down and if i try to push the power button it won't boot but the fans will still run, sometimes the computer will boot for a few seconds then switch off again, or when it shuts down the computer will just reboot itself.. i'm really not sure what to do here, i don't see how cooling can be the problem, i bought a larger case and i have an additional two fans, i haven't overclocked either. I was wondering if you guys could advise me on what i can try next.. thanks



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#2 computerxpds

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Posted 09 February 2013 - 11:27 AM

Hello,

First lets get some info on your machine posted.

Please download MiniToolBox , save it to your desktop and run it.

Checkmark the following checkboxes:
List last 10 Event Viewer log
List Installed Programs
List Users, Partitions and Memory size.

Click Go and paste the content into your next post.

Also please follow this: http://www.bleepingcomputer.com/forums/t/323892/publish-a-snapshot-using-speccy/#entry1797792 and post that as well.
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#3 Kiririn

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Posted 09 February 2013 - 11:44 AM

Hi, thanks for replying!

 

http://speccy.piriform.com/results/84hHGadGC5Lhepiy8qDu1BW

 

MiniToolBox by Farbar  Version:10-01-2013
Ran by Jacob (administrator) on 09-02-2013 at 16:41:21
Running from "C:\Users\Jacob\Downloads"
Windows 7 Home Premium Service Pack 1 (X64)
Boot Mode: Normal
***************************************************************************
 
========================= Event log errors: ===============================
 
Application errors:
==================
Error: (02/09/2013 03:49:41 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/09/2013 00:44:03 AM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/08/2013 07:36:33 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/08/2013 03:08:52 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/07/2013 09:30:41 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/06/2013 05:10:29 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/05/2013 05:15:12 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/04/2013 05:42:00 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/03/2013 04:47:41 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
Error: (02/03/2013 04:25:12 PM) (Source: WinMgmt) (User: )
Description: //./root/CIMV2SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 990x80041003
 
 
System errors:
=============
Error: (02/09/2013 03:48:31 PM) (Source: Service Control Manager) (User: )
Description: The ScRegSetValueExW call failed for FailureActions with the following error: 
%%5
 
Error: (02/09/2013 03:48:17 PM) (Source: Service Control Manager) (User: )
Description: The ScRegSetValueExW call failed for FailureActions with the following error: 
%%5
 
Error: (02/09/2013 03:48:17 PM) (Source: Service Control Manager) (User: )
Description: The ASPI32 service failed to start due to the following error: 
%%2
 
Error: (02/09/2013 03:48:14 PM) (Source: EventLog) (User: )
Description: The previous system shutdown at 01:32:20 on ?09/?02/?2013 was unexpected.
 
Error: (02/09/2013 00:42:53 AM) (Source: Service Control Manager) (User: )
Description: The ScRegSetValueExW call failed for FailureActions with the following error: 
%%5
 
Error: (02/09/2013 00:42:36 AM) (Source: Service Control Manager) (User: )
Description: The ScRegSetValueExW call failed for FailureActions with the following error: 
%%5
 
Error: (02/09/2013 00:42:36 AM) (Source: Service Control Manager) (User: )
Description: The ASPI32 service failed to start due to the following error: 
%%2
 
Error: (02/09/2013 00:42:34 AM) (Source: EventLog) (User: )
Description: The previous system shutdown at 00:15:53 on ?09/?02/?2013 was unexpected.
 
Error: (02/08/2013 07:35:17 PM) (Source: Service Control Manager) (User: )
Description: The ScRegSetValueExW call failed for FailureActions with the following error: 
%%5
 
Error: (02/08/2013 07:35:10 PM) (Source: Service Control Manager) (User: )
Description: The ScRegSetValueExW call failed for FailureActions with the following error: 
%%5
 
 
Microsoft Office Sessions:
=========================
 
=========================== Installed Programs ============================
 
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NVIDIA PhysX System Software 9.12.1031 (Version: 9.12.1031)
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Windows Live ID Sign-in Assistant (Version: 6.500.3165.0)
WinRAR 4.20 (64-bit) (Version: 4.20.0)
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========================= Memory info: ===================================
 
Percentage of memory in use: 40%
Total physical RAM: 8191.18 MB
Available physical RAM: 4896.13 MB
Total Pagefile: 16380.55 MB
Available Pagefile: 10521.48 MB
Total Virtual: 4095.88 MB
Available Virtual: 3978.31 MB
 
========================= Partitions: =====================================
 
1 Drive c: () (Fixed) (Total:298.09 GB) (Free:56.48 GB) NTFS
 
========================= Users: ========================================
 
User accounts for \\JACOB-PC
 
Administrator            Guest                    Jacob                    
UpdatusUser              
 
 
**** End of log ****


#4 computerxpds

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Posted 09 February 2013 - 12:18 PM

Hello again,

When you say it "boots up for a few seconds then switch off again" does it start to boot into windows *then* reboots? Or is it rebooting before it starts to boot windows?
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#5 Kiririn

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Posted 09 February 2013 - 12:30 PM

It goes into windows sometimes or sometimes it won't and once it crashes after the reboot it won't come on for a while but stuff like the optical drive and case fans will spin though


Edited by Kiririn, 09 February 2013 - 12:33 PM.


#6 computerxpds

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Posted 09 February 2013 - 12:36 PM

When it doesn't boot but the fans are running, does it sound like the fans are running at high speed? Does it show anything on the screen during that situation?

Edit: Also sorry if it seems like I am running you in circles, but it could be many things causing this, and I need to pin it down by getting an exact idea of the symptoms. smile.png

Edited by computerxpds, 09 February 2013 - 12:47 PM.

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#7 Kiririn

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Posted 09 February 2013 - 12:51 PM

Hehe it's fine, just glad i am finally getting somewhere, i have tried looking into it myself but am lost >.> 

 

The fans are going at a moderate speed and my screen shows "No Signal"

 

EDIT: I have the webpage open on this forum so i will reply ASAP


Edited by Kiririn, 09 February 2013 - 12:58 PM.


#8 computerxpds

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Posted 09 February 2013 - 01:36 PM

By moderate speed do you mean faster than they do when the computer is running? Also does this seem to happen more frequently when you try to play a game? Most likely based on the fact that it shows 'No Signal' at certain times would (at least to me) indicate an issue with the video card or mobo or ram, or even power supply. Possible issues I can think of that would cause issues like this are, loose cables, overheating etc. With the new fans are they pointed the right way for proper airflow, front to back is the norm. Was this happening before you bought the bigger case and the fans?
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#9 Kiririn

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Posted 09 February 2013 - 01:43 PM

Yeah it just suddenly started about 3-4 weeks ago & the fans run at the same speed as if the computer is running but they don't speed up or anything, just one speed.

I also thought it might have been the video card so i made a fan curve using afterburner, my temps never go over 60 but the computer still crashes, maybe it is the VGA able i am using? I have had it for a LOOONG time, like a few years but i understand how the cable could cause my computer to shutdown :/ I have checked my components to see if there have been any signs of frying and i can't see any damage to the parts, i have good cable management also



#10 computerxpds

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Posted 09 February 2013 - 02:17 PM

Try re-seating the graphics card, if anything else its worth a try. Also make sure all of your connections are secure and if you want, try moving the VGA cable around while the computer is on. Realistically I doubt that cable is causing it to restart, but again its worth a shot. smile.png Also if you happen to know, what are the specs of the power supply you have?
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#11 Kiririn

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Posted 09 February 2013 - 02:24 PM

  Corsair Builder Series CX750 Features:
  • Ultra-quiet 120mm fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature
  • 80 PLUS Bronze certified
  • 0.99 Active Power Factor Correction provides clean and reliable power
  • Complies with ErP Lot 6 European Union standard for low standby power consumption
  • Universal AC input from 90~264V — No more hassle of flipping that tiny red switch to select the voltage input!
  • Extra long fully-sleeved cables support full tower chassis
  • Dedicated single +12V rail offers maximum compatibility with the latest components
  • Over-voltage and over-power protection, under-voltage protection, and short circuit protection provide maximum safety to your critical system components
  • Three year warranty and lifetime access to Corsair’s legendary technical support and customer service
  • Supports the latest ATX12V v2.3 standard and is backward compatible with ATX12V 2.2 and ATX12V 2.01 systems
  • Safety Approvals: UL, CUL, CE, CB, FCC Class B, TÜV, CCC, C-tick
  • Dimensions: 5.9"(W) x 3.4"(H) X 5.5"(L); 150mm(W) x 86mm(H) x 140mm(L)
  • MTBF: 100,000 Hours


I mainly use this machine for friends when they come over and for watching stuff online, i only have one pci-e slot on this mobo sadly :( 



#12 computerxpds

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Posted 09 February 2013 - 02:29 PM

I mainly use this machine for friends when they come over and for watching stuff online, i only have one pci-e slot on this mobo sadly sad.png

By re-seat I meant take it out and put it back in making sure its secure and correctly seated. smile.png Also when the machine is running, check to see if the Power Supply is hot to the touch (hot enough that you can't continue touching it).
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#13 Kiririn

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Posted 09 February 2013 - 02:35 PM

Oops & Ahh i see, i tried that a few times before, all of the computer components are pretty cool, the powersupply is warm-ish i could keep my hand on it all day without it becoming unbearably hot


Edited by Kiririn, 09 February 2013 - 02:36 PM.


#14 computerxpds

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Posted 09 February 2013 - 03:14 PM

Hello again,

If possible, could you take a high quality picture of your motherboard (detailed enough to see the caps and other components). Just to verify that its ok. At this point I am thinking it is a motherboard issue. Also, has it done it today at all? Try letting it run idle (not doing anything on it at all) and see if it restarts.
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#15 computerxpds

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Posted 09 February 2013 - 03:33 PM

Ok scratch the above, after looking a bit and getting advice from another member, it looks like your motherboard is reporting lower than normal voltage on the 5V rail and higher than normal voltage on the 12V rail. To test this you can do one of two things, buy a new power supply (one that is returnable of course) or if you are comfortable and able please follow the steps below:

Reading PSU Rail Voltages

Caution: Please read this before continuing.


Since it will be necessary for your computer to be on during this procedure, you need to be aware that you will be working with live 12Volt DC potentials, which if handled improperly may lead to electrical shock.

There are electronics inside the case that are very susceptible to electrostatic discharges. To protect your computer, touch the metal of the case to discharge yourself of any electrostatic charges before touching any of the components inside.

If you are not comfortable doing this procedure, then I would suggest that you not use this tutorial. The risks involved are minimal, but are there nevertheless. Anyone who uses this tutorial will be doing so at their own risk.


There are two devices commonly used to read the rail voltages: a PSU tester, and a multimeter.

The PSU tester is the easiest to use since all that is necessary is to plug the different connectors into the tester and read the results on the LCD display. The problem with most of these is that they only perform a pass/fail test. They will not provide you with actual voltage readings.

There are a variety of multiple meters, but this tutorial will address Analog and Digital multimeters. The advantage of these meters is that you will be able to obtain accurate real time voltage readings.

For those of you who wish to know more about multimeters there is an excellent article in Wikipedia.


Analog Multimeter

th_analogedited.jpg


An Analog multimeter is a little more complicated to use. Both Analog and Digital multimeters need to be set to the appropriate voltage, but with an Analog multimeter, you will need to choose the voltage range and must read the proper scale.

The Analog multimeter uses a needle display which moves from 0 across the scale until it reaches the voltage being tested. This multimeter has five major linear divisions with multiple scales to read a variety of ranges. An example would be three different ranges. The first is graduated in increments of 0 through 5, the second, 0 through 10, and the third, 0 through 25. Each of these ranges are subdivided into divisions that are graduated into tenths. In order to read 12 volts the 0 through 25 range would be the appropriate one.

Because DC voltage has positive and negative potentials this device is polar sensitive, this means that if you reverse the two probes when reading a positive DC voltage it will read as a negative voltage. This is actually necessary to read negative DC voltages. The two probes are differentiated by their color, Black (negative), and Red (positive). To read a positive DC voltage, the correct probes must be used with their corresponding potentials (positive to positive and negative to negative).

With the probes being used normally to read a negative DC voltage, the needle moves from the 0 to the left, "pegging" the needle. By reversing the probes you can properly read the negative voltages.

Digital Multimeter

th_digitalmeteredited.jpg


The Digital multimeter (DMM) is much simpler to use. As was mentioned previously, you will need to set the appropriate voltage. One of the advantages is that the DMM has an LCD display with a numeric readout, so there are not any multiple scales to read. Another advantage is that most DMMs are autoranging when reading voltages, which means that you will not need to set the range with these DMMs. A DMM will read both positive and negative DC voltages and display them correctly. When reading a negative voltage, a minus sign will appear on the display before the numeric value. This still is a polar sensitive device, so you will still need to use the positive and negative probes with their corresponding potentials.

There are five different DC rail voltages which are color coded. The Black wires are always negative.

Yellow +12VDC

Blue -12VDC

Red +5VDC

White -5VDC

Orange +3.3VDC


There are only three voltages that can be measured easily without disconnecting the 20/24 pin connector from the motherboard: +12V, +5V, and +3.3V.

The +12V and +5V voltages can be read from a four pin Molex power connector.

Four pin Molex power connector

th_250px-Molex_female_connector.jpg


The same voltages can be taken from a four pin SATA power connector, but in order to read the +3.3V you will need to read this from a five pin SATA power connector as seen below.

Five pin SATA power connector.

th_sata-power-cable.jpg

To read these voltages you will need to insert the Black (-) probe into any of the black sockets, and insert the Red (+) probe in the different colored voltage sockets. To read the voltages from a SATA power connector it is easiest to insert the probes into the back of the connector where the wires enter. Unfortunately the sockets of the modular SATA power connectors are not accessible from the back, so the readings will need to be made from the socket side. Some probes are going to be too large to fit in these sockets, so you may need to insert a piece of wire into the socket of which you want to read the voltage of and place the probe on this for your reading. To reduce the potential of creating a short I would suggest taking the ground potential from another connector so that the two wires will remain physically separated.

Caution: It is very important to make sure that you don't allow the two probes to touch each other when taking the voltage readings. This will cause a short which could damage the PSU or other components.

To get accurate readings of the rail voltages it is important that there be a load on the PSU. In order to do this I would suggest downloading Prime95 for this purpose. This program was designed to be used by overclockers to put a full load on the RAM and CPU to determine the stability of their overclocking. Because of this it will put stress on the CPU and RAM which will create higher than normal temperatures. For this reason I would suggest not running this program any longer than is necessary. I would also suggest that an inspection be made of the interior of the case to make sure that there isnt an accumulation of dust which would impede adequate cooling. Pay special attention to the heat sink and fan assembly on the CPU. If there is a dedicated graphics card with a fan installed on it, look at this fan as well.


Readings should not have variances larger than +/- five percent.

Maximum.........Minimum
12.6V.................11.4V
5.25V.................4.75V
3.47V.................3.14V
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