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ayegoo's Avatar
ayegoo ayegoo is offline
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17-Sep-2012, 01:36 PM #1
computer randomly shutting down
Hello, I have a problem with my win 7 computer randomly shutting down. I experienced overheating from graphic card and CPU or a bad HDD where the computer would just freeze and shut down (from my other computers), but this one shuts down as if I clicked on 'shut down' button on my start tab.

It closes my open applications first then shows 'logging off' screen to 'shutting down' screen and than shuts down. This happens pretty randomly. I use this computer mainly for web surfing and watching videos. I never use it for gaming. Sometimes it would shut down within 5 minute of usage and some other times it would not shut down at all for hours.

Its a HP compaq machine with 2.7ghz AMD Sempron, 2GB SDRAM, and Window 7 home premium 64bit. I added a Radeon HD X1300 graphic card and been using it for about 2 years without problem.

I ran all diagnostic programs and ran Malwarebyte AntiMalware and Microsoft Security Essential and found no problem.

CPUID HWmonitor showed all components were around 30-45 degrees.

My only guess left is the power supply. Any thoughts on this?
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18-Sep-2012, 06:29 AM #2
It does sound like the PSU. The only way to be sure is to test with a known good power supply.
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18-Sep-2012, 08:01 AM #3
What is supposed to happen when you press the power button? If this is set to "Shut down" try setting it to something else. I'm thinking that another possibility here is a malfunctioning power button.
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18-Sep-2012, 08:15 AM #4
TerryNet - this is a definite possibility. I usually switch the PWR Switch with the reset switch to test this out. There is no reason that it can't be left that way and just use the reset switch as the power switch.
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18-Sep-2012, 11:38 AM #5
How can I set the power button to something else?

What threw me off here was that this computer goes through all the 'normal' shutting down process such as logging off to shutting down. Usually my other computers would just crash, burn, or whatever....
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black-wolf   (David) black-wolf is offline
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18-Sep-2012, 11:51 AM #6
You have to open the case and the wire to the motherboard that says PWR SW or PS unplug it and replace it with the one that says RSW or Reset. Make sure to unplug the power supply before doing this.
Your computer is shutting down like holding the power switch on your computer down. They do go bad sometimes.
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18-Sep-2012, 01:35 PM #7
I only have laptops, so maybe this does not apply to a desktop.

Control Panel - Power Options (don't know the category if you are using that view) - Choose what the power buttons do - choices for 'When I press the power button' include Do nothing, Sleep, Hibernate and Shut down.
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black-wolf   (David) black-wolf is offline
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18-Sep-2012, 01:44 PM #8
Basically the same thing on a desktop.
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18-Sep-2012, 09:01 PM #9
Awesome. I'll try it and see if it works... Thanks!
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20-Sep-2012, 09:11 PM #10
could be the power supply.

Last edited by Cookiegal; 21-Sep-2012 at 10:16 AM.. Reason: Unauthorized malware removala advice removed
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21-Sep-2012, 10:18 AM #11
MacyMoo,

I've edited your post as you are not authorized for malware removal. Please refer to this section of the site rules:
Quote:
Log Analysis/Malware Removal - In order to ensure that advice given to users is consistent and of the highest quality, those who wish to assist with security related matters must first graduate from one of the malware boot camp training universities or be approved by the administration as already being qualified. Those authorized to help with malware issues have a gold shield next to their name and authorized malware removal trainees have a blue shield next to their names.
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22-Sep-2012, 01:50 AM #12
I'm kinda curious what the malware removal advise was. Apparently changing the power button option didn't solve the question. I'm only left with the PSU now...
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22-Sep-2012, 02:55 AM #13
[irrelevant rant deleted by mod]

Last edited by TerryNet; 22-Sep-2012 at 09:05 AM.. Reason: irrelevant
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black-wolf   (David) black-wolf is offline
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22-Sep-2012, 05:19 AM #14
The PSU would be the next thing that I would try, if you have one that you can use to test with would be better than buying one to test with.
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