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winterloggan

Computer is very dead, COVID makes this worse

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Posted · Original PosterOP

I built my own desktop about 3 years ago. It has worked pretty much flawlessly since then. 

However, the other day I went to turn it on and nothing happened (and I do mean nothing). Not a single light came on on the outside of the case or on the motherboard. No fans spun up, and no outputs worked.

I tried looking online, and most outlets pointed at the PSU as the most likely source of the problem. I removed my PSU and did the test where you jump the power on switch, and it worked. The fan came on, and using my digital multimeter I check that all of the pins were outputting power. 

I also read that the CMOS battery can sometimes go bad in a computer this old, so I replaced it. Still unresponsive.

As far as I can tell, all of these signs point to something being very, very wrong. Because of all of the COVID crap going on, buying half a computer's worth of parts just to diagnose the problem doesn't make financial sense right now. I also cannot exchange extra parts with my friend nearby for the same reason, and I also don't want to damage any of his parts.

Are there any other ways I can test my machine before I write off the motherboard and CPU as a total loss? I have nothing but time these days, so if it is a matter of trying something, I might as well.

And yes, everything was plugged in, no fuses were blown, and the power supply switch was on. I left the computer exactly as I normally would when I shut it down for the last time. I didn't move it around or do anything that would unseat something like the RAM.

 

Just some more context:

The only thing that was strange was that the night before, I plugged in a flash drive into one of the front USB slots on the case (there are two of them) and both slots suddenly stopped working; my headphones were being used in the other one. I plugged the same flash drive and headphones into another computer and they worked fine. Perhaps that has something to do with it, but I'm not sure. I continued to use my computer for about an hour after that, and turned it off and on a few times to try and fix the problem, before finally shutting it down for the night. 

Also, there was not major/obvious catastrophic failure, such as blue smoke or a burning smell. Every thing looked fine visually as well.

 

Not sure these are entirely relevant, but here are the specs:

-CPU: Intel 6600K (NOT overclocked)

-MB: MSI B250... mortar? I think

-GFX: Sapphire Radeon RX 480

-PSU: Corsair CX 550M

-RAM: 2x8GB Kingston Fury

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It happened to my 1.5 year old pc a while ago. I was sure PSU is fried because a bug or splash from rain drop went into it since it was put on the place beside window. I tried to test out everything but nothing is fixed. Then I tried unplugging everything and powering on and off just the PSU and then put everything back on and oh man .. it came back to live.

 

The same problem happens again 3 weeks later since the 1st time, but this time just unplug the PSU and remove CMOS battery and put them back after 10 minutes or so. It gets fixed.

 

I don't know the problem nor the soulution I did was right or wrong. But that PC is doing well now. :D

 

Hope yours get well soon. Cheer!

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Posted · Original PosterOP
2 hours ago, ZWELINHTET said:

It happened to my 1.5 year old pc a while ago. I was sure PSU is fried because a bug or splash from rain drop went into it since it was put on the place beside window. I tried to test out everything but nothing is fixed. Then I tried unplugging everything and powering on and off just the PSU and then put everything back on and oh man .. it came back to live.

 

The same problem happens again 3 weeks later since the 1st time, but this time just unplug the PSU and remove CMOS battery and put them back after 10 minutes or so. It gets fixed.

 

I don't know the problem nor the soulution I did was right or wrong. But that PC is doing well now. :D

 

Hope yours get well soon. Cheer!

Thank you for the suggestion, 

I tried it, but nope! Still very much dead :/

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34 minutes ago, winterloggan said:

Thank you for the suggestion, 

I tried it, but nope! Still very much dead :/

@winterloggan I'm sorry to hear that. Hope someone with the solution come soon. Good Luck!

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