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PC power button acting weird.

revol

Basically what happens is when I tried powering on my pc today the power button didn't recognize i pressed it multiple times held it pressed in for a few seconds, tried switching PSU switch ON and OFF nothing. Eventually pc started and when I tried to replicate this it didn't happen again. This is the second time this happens first time was a couple of weeks ago everything was same like right now and didn't reappear until today. After that first time I cleaned those cables from power button and pins where it connects since then the issue didn't appear and everything was until now, I originally thought it was just dust, but it seems it's not because it just happened again also now it seems when I press the power button pc starts to boot up and immediately loses power for about half a second fans stop spinning, lights go out and then boots up like usual, what could cause this issue?

 

My system:

OS: Windows 11 Pro (Fresh Install)

GPU: Gigabyte RTX 3080 10GB Gaming OC rev. 1.0

CPU: I7 10700F

Motherboard: MSI MPG Z490 Gaming Plus

RAM: Corsair vengeance 32GB (4x8) 3200mhz

PSU: Be Quiet Pure Power 11 700w

Case: Deepcool Matrexx 50

 

Also multiple SSD's main OS ssd is samsung 990 pro 1tb, second is Seagate something sata ssd 1tb and third is Samsung 980 1tb. The Main OS ssd is new and the power issue has happen with the old ssd too so it not ssd.

 

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Have you tried shorting the power pins on the motherboard?

Apprentice Software Developer

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2 minutes ago, Blasty Blosty said:

Have you tried shorting the power pins on the motherboard?

Just tried that, but can't really tell anything it boots up as usual. And I can't replicate the issue I was having, but this is definitely not a one time thing because this has happened already twice. Im thinking maybe this has to do with case since it's like 40$ new and those cables probably are shit, but I also could be very wrong and I don't want to blindly buy a case just to find out it was something else, already have spent on this pc much more than I should've.

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my gues is that the power button itself is sticking internally or othervise broken. if it was sticking it would start to boot up and in the same way as when holding the power button down turns off again after a certain amount of time. you can try installing a temporary button and see if it happens again with that one to, if not you have your answer and a easyly fixable solution

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46 minutes ago, revol said:

Just tried that, but can't really tell anything it boots up as usual. And I can't replicate the issue I was having, but this is definitely not a one time thing because this has happened already twice. Im thinking maybe this has to do with case since it's like 40$ new and those cables probably are shit, but I also could be very wrong and I don't want to blindly buy a case just to find out it was something else, already have spent on this pc much more than I should've.

Boots up as "usual" as in it works perfectly fine or still has issues?

Apprentice Software Developer

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it sounded like it was a isue that happens semi rarely so it would generally boot up just fine since he said he could not replicate it but has happened multible times with weeks in between 

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to speed up testing the button thing you could always just turn on the computer then turning it off and repeating that over and over

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39 minutes ago, Blasty Blosty said:

Boots up as "usual" as in it works perfectly fine or still has issues?

It works perfectly fine no delay, button is recognizing when I press it imediatelly starts to boot up and boots up even that weird power loss for half a second after pressing the button seems to be gone. Also I should've mentioned that this started happening after I was redoing my cable management behind the case since it was a mess and while I was trying to cut the zipties holding the cables together I scratched the case front panel cables I don't know if I actually scratched the power button cable or any other, but I know I did scratch something, but that doesn't make sense why it turned on fine after that and only a couple of days later started acting like this and now powers up fine without changing anything else and doesn't replicate.

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56 minutes ago, blodfighter said:

my gues is that the power button itself is sticking internally or othervise broken. if it was sticking it would start to boot up and in the same way as when holding the power button down turns off again after a certain amount of time. you can try installing a temporary button and see if it happens again with that one to, if not you have your answer and a easyly fixable solution

I'm also thinking this has to do something with the button/button cable itself because if it would be something more serious like PSU I believe my whole pc would start acting weird and right now I'm playing games max settings at 1440p with just gpu drawing more than 320watts and there isnt any random shutdowns or anything so it wouldn't make sense that it can supply like 500+ watts for multiple hours, but isn't capable of supply less than 100watts for a power button to boot up pc, infact i literally just played for couple of hours without any issues after this weird power button encounter and I think its safe to say that PSU checksout as fine. Also I believe it would happen more often if it was motherboard issue and probably woudn't turn on at all then.

Only logical explanations seems to be case/power button also given the price it is.

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it isnt button power i was talking about but something broken inside the mechanism in the button that completes the circuit to start the pc, if that circuit is kept completed the pc will pretty quicly power off again.

this is an example of a button with the circuit completed, wich i hope atleast gives you an understanding where i was coming from

button.png

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