CPU fans spin for a bit when I flip the switch on PSU, PC doesn't boot though.

[Recksss]

Good day, running into a very strange issue, wondering if anyone has come across this issue.

So last night I was able to use my PC just fine, I turn it off and go to bed, and as usual once everything's off - I switch off my UPS.

The next day I switch on my UPS, I notice my PSU makes a clicking noise (clicked twice, i feel like once is for power and the other cuts it for protection).

I haven't even pressed the power button, the RAM sticks light up, and the fans spin for a second the moment the PSU gets power. The PC doesn't POST though, and no display on either monitor

I noticed:
Holding down the power button doesn't do anything, RAM RGB stays on, fans don't spin at all still.
PSU makes a click consistently when flipping the switch off, then on

I've tried:
Reseating RAM
trying to POST without GPU (Or at least, get normal booting behavior)
Removing PSU cable to CPU and trying to POST
Plugging to wall directly (not using UPS)

And no dice.

I pulled out the PSU and used the "PSU Tester" that comes with the Seasonic box, and the PSU fans spin when I connect the tester/jumper.

I'm at my wits end here - just got back from a month and a half long vacation and I'm itching to get some gaming done.

Specs:
Seasonic GX 750 (Recently replaced a faulty ASUS TUF Bronze 750w)
3060ti
32gb ddr4 3200mhz RAM
i7 12700f
1 sata ssd, 1 m.2 ssd, and 1 sata hdd

[keskparane]

Try clearing the cmos. There should be a jumper you can use. If  not then just take the cmos battery out, unplug the psu and try and turn it on, that should discharge and stored current, then put the battery back in.

 

My hunch is that power state in bios is set to return to last state. Either way make sure it's set to power off.

 

 

 

 

[Mark Kaine]

probably psu is damaged due to all the on and off switching - psus aren't really designed for that as it puts a lot of stress on them.

 

could also be your cmos battery since you seem to power off your psu often, which also puts stress on the cmos battery more than usual. 

 

4 hours ago, Recksss said:

Seasonic GX 750

i would recommend a corsair rmx 650 instead  - if you don't find another solution. 

 

[Recksss]

3 hours ago, keskparane said:

Try clearing the cmos. There should be a jumper you can use. If  not then just take the cmos battery out, unplug the psu and try and turn it on, that should discharge and stored current, then put the battery back in.

 

My hunch is that power state in bios is set to return to last state. Either way make sure it's set to power off.

 

 

 

 

I removed the CMOS battery and put it back on, and the weird behavior has stopped, I managed to get to the windows login screen before my computer restarted itself twice, once with display - restarting then with no display. I noticed that my 3060ti was no longer lighting up (usually has white rgb then changes to whatever i set it to on software end), but RAM RGB was lit up.

I changed it with my spare RX570, same behavior, no display but the GPU lights up this time. I'm thinking it could now either be:
-PSU Cable
-PSU itself
-GPU Slot on motherboard/Motherboard

 

Some interesting notes:

-Plugging out keyboard and plugging it back in on the front and back panels make the LEDs light up

-After cleaning the GPU slot, either gpu lights up but eventually I hear the power cut and it "restarts" I notice the RAM RGB going off at this time and then going back to how it is (RAM RGB Lights up, case fans spin, CPU fans spin)
-I removed the GPU and PSU Cable, and I keep an eye on my keyboard LED, as it usually starts with num lock on, so I can tell that it "progresses" however all LEDs stay dark.
-Keyboard, while it does light up for a second, it is not responsive - pressing numlock does NOT make the LED light up.

[Recksss]

3 hours ago, Mark Kaine said:

probably psu is damaged due to all the on and off switching - psus aren't really designed for that as it puts a lot of stress on them.

 

could also be your cmos battery since you seem to power off your psu often, which also puts stress on the cmos battery more than usual. 

 

i would recommend a corsair rmx 650 instead  - if you don't find another solution. 

 

Oh I don't really switch the PSU on or off - I just had to do that to troubleshoot the initial issue above, It's the UPS I shut off after shutting the PC off, is this the same thing?

*Pardon the doublepost, I wasn't aware you could multiquote.

[Mark Kaine]

1 hour ago, Recksss said:

Oh I don't really switch the PSU on or off - I just had to do that to troubleshoot the initial issue above, It's the UPS I shut off after shutting the PC off, is this the same thing?

*Pardon the doublepost, I wasn't aware you could multiquote.

oh, ok... no not the same thing but could have similar effects on the CMOS battery...

 

So lets start with the easy stuff first... turn off power (remove the power plug from psu too, that'simportant! ), remove the CMOS battery for like 30 minutes,  put it back, turn on the power and see if anything changed.  

 

edit: oh you did that already... well time to start swapping parts...

 

First try not using your ups, just to see if that's what's faulty... if it still doesn't work I'd recommend buying a new CMOS battery (its kinda unlikely but cheap and an almost empty CMOS battery can have all kinds of weird effects) 

then next up get a new psu (i got a hunch that could actually be the culprit tbh) and get a different model *not* the same model (i already said above which psu i recommend) 

well and then motherboard i guess... but lets hope one of the previous things fixes it.

[Recksss]

1 hour ago, Mark Kaine said:

oh, ok... no not the same thing but could have similar effects on the CMOS battery...

 

So lets start with the easy stuff first... turn off power (remove the power plug from psu too, that'simportant! ), remove the CMOS battery for like 30 minutes,  put it back, turn on the power and see if anything changed.  

 

edit: oh you did that already... well time to start swapping parts...

 

First try not using your ups, just to see if that's what's faulty... if it still doesn't work I'd recommend buying a new CMOS battery (its kinda unlikely but cheap and an almost empty CMOS battery can have all kinds of weird effects) 

then next up get a new psu (i got a hunch that could actually be the culprit tbh) and get a different model *not* the same model (i already said above which psu i recommend) 

well and then motherboard i guess... but lets hope one of the previous things fixes it.

The power cycle got it working, I had to reset my cpu clocks and xmp, and panicked when it started doing the whole "gpu light going off and on without booting" upon doing so, but a few restarts after it seems to work, fired up 3dmark and seems to be able to perform under load as well.

 

I do recall having issues with XMP at first, so that may have done it.

 

What I don't get is why being gone for a month and a half would cause the issue to arise now. I'll just get some spare cmos batteries just in case, I noticed that the time was wrong when I booted into windows.