Computer Turned Off and Will Not Turn on Again
#one 
krs000a
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Posted 03 August 2021 - 08:02 AM
Today, all of a sudden, one of my desktop computers just all of a sudden powered off. There was no "Windows is closing" or anything, merely just *poof* and it was off.
I pushed the ability button and the reckoner powered back on and Windows booted. Virtually 5 minutes later, it did turned off once again. Since then, I can not get information technology back on. Zilch happens at all when I push the power button.
When I unplug the ability cord and plug information technology dorsum in, in that location is a quick and faint electrical "zzzt" sound (deplorable not sure how to explicate it but it ever does that when I connect the power cord.
I understand it'south incommunicable to say for sure what is wrong, merely what is most probable going on? Is it the power supply unit that has died? Or the motherboard? Is in that location any way I can easily figure out what is wrong other than replacing each hardware at a time?
The computer is non fifty-fifty two years old.
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#ii
ranchhand_
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Posted 03 August 2021 - 08:thirteen AM
Showtime, test your front end console power switch as follows:
Ability your unit downwardly. Exit information technology plugged in to the wall outlet. Pop off the side of your calculator, and trace the small cable running from your forepart panel, on/off power switch to where it plugs into the tiny socket on the mainboard. Gently pull that plug off, revealing two contacts. Take a flat-bladed screwdriver, and brusk the two contacts. Your estimator should immediately power upwards and start to boot. Permit it run and use information technology usually for several hours. If it runs usually that front panel on/off switch needs to be replaced.
If it notwithstanding will not boot, and then the problem is elsewhere.
If there are no responses to my postal service for three days I remove it from my answer list. If yous wish to continue the thread later 3 days please PM me.
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#three
krs000a
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Posted 03 Baronial 2021 - 09:20 AM
First, test your front panel power switch as follows:
Power your unit of measurement down. Leave it plugged in to the wall outlet. Popular off the side of your computer, and trace the small cable running from your front panel, on/off ability switch to where it plugs into the tiny socket on the mainboard. Gently pull that plug off, revealing ii contacts. Take a flat-bladed screwdriver, and short the two contacts. Your computer should immediately ability upward and start to kick. Permit it run and use it normally for several hours. If information technology runs unremarkably that front panel on/off switch needs to exist replaced.
If it nonetheless volition not boot, then the problem is elsewhere.
Thanks for answering. I tried that now, and zippo happened. Exercise yous take any suggestion of what I could endeavor next?
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#4
JohnC_21
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Posted 03 August 2021 - 09:44 AM
If you have a multimeter check the PSU output.
https://www.youtube.com/watch?v=ac7YMUcMjbw
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#5
krs000a
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Posted 03 August 2021 - x:07 AM
Unfortunately I do not have a multimeter. Could I mayhap merely take a power supply out of another computer and install it in this ane? I gauge they are pretty much the aforementioned?
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#6
JohnC_21
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Posted 03 August 2021 - 10:25 AM
You need to brand certain it has all the required connectors that the possible problem PSU has. Besides the wattage must be the same or more the PSU you are replacing. What is the make and model of the trouble figurer?
If y'all have a harbor freight near yous this multimeter will practice the job and information technology'southward not that expensive.
https://www.harborfreight.com/vii-function-digital-multimeter-63759.html
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#7
krs000a
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Posted 03 August 2021 - ten:46 AM
Yous need to brand sure information technology has all the required connectors that the possible problem PSU has. Also the wattage must be the same or more than the PSU you are replacing. What is the make and model of the problem computer?
If you lot have a harbor freight near you this multimeter volition do the job and it'south not that expensive.
https://www.harborfreight.com/seven-function-digital-multimeter-63759.html
No I have no Harbor Freight stores in my country. Multimeters cost style more than in my country only of class I could order one but was hoping maybe I could go away by solving this quicker because deliveries are so slow.
The computer that is not powering on is a custom built system I purchased on eBay a year and a half agone, and then no model or make for that. The one I was wanting to take the power supply out of is an old Dell Inspiron 660. I have taken photos of the power units inside each of the computers, in case that can be of any assistance. The first photograph is the power unit within the problem computer.
Hello resolution versions for more detailed view of the numbers and stuff:
https://i.ibb.co/BrR4HVZ/IMG-20210803-172942.jpg
https://i.ibb.co/RjPWZFx/IMG-20210803-173446.jpg
Edited by krs000a, 03 Baronial 2021 - 10:46 AM.
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#8
JohnC_21
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Posted 03 August 2021 - 11:37 AM
I'm going to PM a BC Advisor member who has more hardware experience than me but I would non put that Dell PSU into your custom build. Your Dell PSU is simply 300 watts and the 12v track practice not match.
I would wait for a reply from the BC member.
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#ix
ranchhand_
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Posted 03 August 2021 - 12:eighteen PM
If you have Amazon (or whatsoever other supplier) in your land, a figurer power supply tester would exist great. Here is a link to what I am talking about...not very expensive and it's easy to employ. I have one for years and use information technology all the time.
https://world wide web.amazon.com/s?k=power+supply+tester&ref=nb_sb_noss_1
Additional information: https://www.bleepingcomputer.com/forums/t/755406/upgraded-psu-and-cpu-merely-not-powering-on/
Whorl down to post #three.
If in that location are no responses to my post for 3 days I remove information technology from my answer listing. If you wish to go on the thread after 3 days please PM me.
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#10
jonuk76
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Posted 03 August 2021 - 08:12 PM
This volition exam very but if the power supply will switch on. Use a bent paperclip to curt the pins illustrated in this guide - https://www.silverstonetek.com/downloads/QA/PSU/PSU-Newspaper%20Clip-EN.pdf
If the machine is a basic one (part PC, no high ability GPU etc.) then the Dell PSU may serve to test it. Information technology won't exist suitable for running a PC with a powerful gaming graphics card.
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#11
krs000a
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Posted 04 August 2021 - 03:53 AM
Thanks guys for all your replies. I had a friend over who tested my power supply with a device and said information technology'due south fried and needs replaced. I was going to use the ability unit from the Dell computer only to endeavor to figure out if that was the problem, but now that it has been confirmed the power unit of measurement is no expert I decided to just lodge a new one with right wattage.
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#12
ranchhand_
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Posted 04 August 2021 - 08:50 AM
Cheers for posting back and letting united states know that our diagnosis was right; information technology helps us to assistance the next poster.
If in that location are no responses to my post for 3 days I remove it from my answer listing. If you lot wish to continue the thread afterward 3 days please PM me.
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Source: https://www.bleepingcomputer.com/forums/t/756043/computer-suddenly-turned-off-and-wont-turn-back-on/
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