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My PC Keeps Shutting Off!


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#1 Flupoe

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Posted 16 July 2009 - 11:04 AM

My pc will shut off suddenly. A few days ago I had received an email with a .rar attachment of a chart of pictures of colors. My AV said it was safe so I opened and saved to my harddrive. When I opened it from there my pc immediately shut off. I have to unplug it and replug before it will start again each time it shuts off. I ran AV scan and it shows okay. I ran malwarebyte it says okay. Superantispyware says okay. I can't run any scans online, it will shut off. I ran ckdsk and it showed several things wrong and corrected them. I can't run sfc /scannow from cd or from my I386 folder, it will shut off. It will shut off if I try to run MEMTEST86 or hdd tests. I can surf okay and now open the picture file okay. I checked my cpu temp in bios the next day and it had jumped from my normal 112 -118 F. to 158 - 160 F. I took the side panel off and carefully cleaned everything and installed a new case fan (it never had one) and the temp goes up to 135F now. It is from 70F. to 80F. room temp where the pc is. I can put my finger on the cooling fins mounted on the cpu (I don't touch anything else for fear of static and I hold the case frame when I do this) and it is always cool. My PSU fan works and it is just warm at times. I changed the power connection cable. I went to update video drivers, it shuts off. Anything else to update, it shuts off. It shut off tuesday when I tried to let microsoft update. It took two tries then worked. I ran hijackthis and the log seemed okay but then again I'm not sure on this. I have minidump on but it doesn't leave a log in c:\windows. I did have a minidump in drwatson folder but when I checked this yesterday it was erased somehow. At first nothing was found in event viewer. Now in event viewer - system, it only has one warning that it has repeated the last few days--------

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7000
Date: 7/14/2009
Time: 10:13:04 PM
User: N/A
Computer: EWA
Description:
The HDD & SSD access service service failed to start due to the following error:
The system cannot find the file specified.

or it will say it 'cannot find the path specified'.
-------------------------------------------
It could be just coincidence the pc shut off when I clicked on the picture file. I don't know. I'm not any smart with the pc and I know it is old but it is all we have for now. This pc is not used for any gaming, just email, internet and simple stuff. I've googled a lot but it is mixed information I seem to find. I don't know if it is hardware, software, infected, little green aliens or just weird. Any help will be greatly appreciated from me before I lose my sanity.

Size: 74.53 GB
Operating System: Microsoft Windows XP home edition, (v5.1, build 3600) SP3
System Manufacturer: VIA Technologes, Inc.
Motherboard Model: KT400A-8235
Motherboard Vendor: Biostar
BIOS Model: Phoenix - AwardBIOS v6.00PG
Processor: AMD Sempron™ 2600+, MMX, 3DNow, ~1.8GHz
Memory: 256MB RAM
Info On Video Card- Model: ATI 9550 AGP8X 128MB TV-OUT DVI
GPU Code Name RV350 (AGP 8x 1002 / 4153, Rev 00)
GPU Clock 250 MHz (original: 250 MHz)
Memory Clock 196 MHz (original: 200 MHz)
Power Supply Unit: (It's what I read on the side)?
FEEL Mode Com, switching power supply, model: LC.B3DDATX, passive PFC, total output: 300w, 60hz-50hz (I'm 50hz)
-------------
Sensor Properties When Posted:
Temperatures:
Motherboard- 55 C (131 F)
CPU- 57 C (135 F)
Aux- 30 C (86 F)
WDC WD800BB-22JHA0- 38 C (100 F)
Cooling Fans: CPU- 3750 RPM
Voltage Values: CPU Core- 1.54 V
+2.5: V 2.56 V
+3.3: V 3.18 V
+5 V: 5.00 V
+12 V: 11.52 V
+5 V Standby: 4.84 V
VBAT Battery: 3.17 V
-------------
One new case fan,
Monitor: one SyncMaster 720n, Samsung
Display Adapters: Radeon 9550 (RV350), Radeon 9550 Secondary (not updated)
Browsers: IE8, Google Chrome, Firefox- used the most
DirectX 9.oc
C-Media AC97 Audio Device
Anti-Virus: Avast home edition
Firewall: Online Armor
All Microsoft updates,
Email: Thunderbird
printer, scanner

Sorry if I've over posted info.

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#2 hamluis

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Posted 16 July 2009 - 11:40 AM

My untrained eyes see...power supply as a logical candidate.

Unfortunately, there's nothing in Windows that can substantiate/refute that premise.

Louis

Edited by hamluis, 16 July 2009 - 11:41 AM.


#3 steelysteelers23

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Posted 16 July 2009 - 11:51 AM

It could also be a problem in windows itself. I'd try re-installing windows and see if the issue gets fixed. If not then you know it's hardware related.

#4 Flupoe

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Posted 16 July 2009 - 11:53 AM

I was wondering if there was any way to check the psu without buying another one. Also if a new type of malware or virus could be causing this.

#5 Flupoe

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Posted 16 July 2009 - 11:55 AM

I thought of re-installing windows but if it won't install how will I know what hardware to fix? I'm not smart on this stuff.

#6 steelysteelers23

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Posted 16 July 2009 - 12:08 PM

I would probably rule out viruses or malware because of how many programs you used and from personal experience malwarebytes will do the job.

If reinstalling windows works then you know it's not the PSU so you wouldn't have to worry. Windows should reinstall no problem but if it shuts off during the installation it's probably the PSU. If something else goes wrong during installation (besides it shutting down) let me know what happened and I can help you with what hardware problems you might have.

#7 Flupoe

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Posted 16 July 2009 - 12:49 PM

Thanks for explaining about re-installing. I was worried something would happen and I would have no way of knowing anything. It seems that is all I can do at the moment is just try to re-install. It's too bad there is no way of checking the psu through the pc. Thanks for the help. This will take a while.

#8 hamluis

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Posted 16 July 2009 - 01:32 PM

The ultimate way to check a PSU that is suspect...is to replace it temporarily...and see if the problem continues.

http://www.google.com/search?hl=en&q=h...ply&aqi=g10

Louis

#9 AustrAlien

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Posted 16 July 2009 - 01:34 PM

There is a CPU over-heating problem.

To test this as a possible cause of your "shut-down" problem, try using a CPU temperature monitoring software, so that you can keep an eye on the temps. Download and run "toast.exe" to run the CPU at 100%, and watch the temp. Does this cause your system to shut down? This is not suggested as a foolproof and "quick" test, though.

I strongly suspect that the thermal paste contact between the CPU and the heatsink has broken its contact. Replace with new paste and then test. I think that this is likely to be a very quick and easy solution to your problem.

See links for instructions:

http://www.hardwaresecrets.com/article/274

http://www.techpowerup.com/printarticle.php?id=134
AustrAlien
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#10 Flupoe

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Posted 16 July 2009 - 02:10 PM

Is speedfan okay to toast with? I remember when I touched the heatsink fins the whole heatsink moved slightly. It's only held by one spring clip running through the center. Also the fins are always cool. Not even warm. I've never had to check it before. Currently speedfan is showing cpu heat running at 135F. I'm only typing to reply to this forum. I suspect the psu giving some trouble also but I have no way of checking by putting another in for the time being or I would. Thanks, hamluis, for the link. I will study this.

#11 AustrAlien

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Posted 16 July 2009 - 02:31 PM

I am not familiar with "speedfan", but I just had a quick look, and it would seem that it monitors the temp .. but I could not see any info to suggest that it will run your CPU up to 100% and keep it there.

Download toast.exe from here (it is a very small file):

http://majorgeeks.com/download.php?det=867

and save to your Desktop. Double-click on it and let it run .... I suggest 20 minutes should do it .... and watch the CPU temp (using Speedfan).

In any case, I strongly advise replacing the thermal paste ... it should be done as a normal maintenance procedure ... it is not a big job to do, once you have done it the first time.

***IMPORTANT***Be very careful .... if the seal formed by the paste is broken, the heatsink will simply come away from the CPU with ease. That is good. If the seal is intact, the heatsink is likely to be very firmly "stuck" onto the CPU, and this is where you could have a problem if you persist. To release the grip of the heatsink on the CPU, you may need to apply heat to it using a hair-dryer, and exert a twisting movement to gently try to break the seal. DO NOT ... simply forcibly remove the heatsink+CPU together. The CPU is held/locked into the mobo with a clamp and this must be released before actually removing the CPU from the mobo ... as well as replacing it too, of course. (Not suggesting that you do need to remove the CPU from the mobo, though.)

Edited by AustrAlien, 16 July 2009 - 02:41 PM.

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#12 Flupoe

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Posted 16 July 2009 - 03:47 PM

Sorry. AustrAlien. My wording was wrong about speedfan. I downloaded toast.exe and all four times when I clicked on 'run' the pc simply shut off. I can't run it either. Nothing shows in event viewer or crash dumps. I will definitely have to re-paste the heatsink. You can barely touch it and it will move around too easy. The clamp does not seem to be holding well. I don't know what happen. I've went since it was bought a few years ago with no temperature problems. What type would you recommend to use in paste? I read when googling how to apply it. I'll see what happens tomorrow.


hamluis, Thanks for the links. I have a multi-tester that I found out I can use to test the psu. At least the basics. I thought it was more difficult than was shone. The electric coming to the unit has to be watched here in Poland. erratic sometimes. I'll try it tomorrow

Thanks all for helping.

#13 hamluis

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Posted 16 July 2009 - 04:05 PM

Easily done, keep us posted :thumbsup:.

Louis

#14 AustrAlien

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Posted 16 July 2009 - 04:17 PM

Re: what paste?

It really does not matter ... but if I had to make a choice, it would probably be "Arctic Silver" or "the most expensive one"?

Good luck.
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#15 Flupoe

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Posted 17 July 2009 - 01:18 PM

Good news everyone! Today I cleaned and re-pasted the heatsink and after running tests for several hours today the average temp is 122F. Normal for this pc was 114F to 118F. I'm fairly certain I can even lower the temp more since I was a little afraid of putting too much paste and you can almost see through it. Maybe not. At least I have learned how to take a heatsink off and re-install. This morning it was around 118F for a couple of hours then the heat rose to 83F in the room here. No air conditioning and the case closed. I ran the toast test and it never tried to shut off. The temp did rise to 147F but that was the highest. I hope that is okay. After the test the temp dropped back to 122F. I ran everything that the pc had been shutting off on. MEM86, HDAT2ALl, sfc /scannow, directx test, malware/virus tests. No problems. I tested the psu and the unit is showing 12v output at 11.98v and 5v output at 5.1v. Is this acceptable? I had read that + or -.3 was okay from the psu. I would like to verify that through someone's experience if possible. I have a good air flow through the inside of the case now. If the temp and the psu readings are acceptable, then I'm gonna be one smilin old dude. The origin of the trouble seems to have started with an unknown Trojan in an email attachment. I ran hijackthis and found a folder with a file missing. Anyway, the security app was partially uninstalled. I re-installed, total uninstalled, corrected the reg path and with you people's great help I'm at this stage of my history. :thumbsup:




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