System doesn't even start to post

[ChalkChalkson]

So I just did a routine thermal paste and coolant replacement in my system, I then waited for 2  days just in case I might have spilt a little on the system (while running the pump to purge air bubbles). When I checked today everything seemed dry just as it did after replacing the fluid. When I tried to power on the system nothing happened. That is super odd to me. Even if I shorted some random capacitor in the CPU area it should still turn the PSU on (which comes with an audible click) but even that didn't occur. I then tested if maybe the PSU or the power button might be broken, but both work fine. This is super weird to me, since even if there was considerable damage to the mobo, unless it's in a very robust and simple part of the PCB, it should still at least start to power on. Like turning on the PSU should probably even happen if I broke the darn thing in half (admittedly only for a subset of ways to break it off). Anyone any ideas of what I might be missing? I sadly don't have another compatible board to test with and would love to avoid dealing with both taking my entire rig apart again and dealing with customer service.

 

Thanks a ton in advance!

[Statik]

This might sound a little rediculious, but is your PSU switched on, and is the outlet it's plugged into confirmed to be working? Because I've had it both happen where once I bumped the switch on my PSU and thought my PC was broken for 20+ minutes. Then another time a breaker popped and the outlet had no power and my PC wouldn't boot

[ChalkChalkson]

1 hour ago, Statik said:

This might sound a little rediculious, but is your PSU switched on, and is the outlet it's plugged into confirmed to be working? Because I've had it both happen where once I bumped the switch on my PSU and thought my PC was broken for 20+ minutes. Then another time a breaker popped and the outlet had no power and my PC wouldn't boot

Jup checked several times. After it didn't start I both jump-started the PSU and powered it on via another system

[AngryBeaver]

17 minutes ago, ChalkChalkson said:

Jup checked several times. After it didn't start I both jump-started the PSU and powered it on via another system

So you were able to confirm the PSU works. Did you confirm that the power switch on the case is properly connected to the motherboard? Make sure the polarity matches what your board wants (shouldn't matter, but I have seen times when it did). You can try shorting the jumpers on the motherboard (if you haven't tried already). You should at least be getting power. If you are not getting powered still then try taking it apart and putting it together again. Make sure to check for anything that could have gotten under or on the motherboard to cause a short.

[ChalkChalkson]

2 minutes ago, AngryBeaver said:

So you were able to confirm the PSU works. Did you confirm that the power switch on the case is properly connected to the motherboard? Make sure the polarity matches what your board wants (shouldn't matter, but I have seen times when it did). You can try shorting the jumpers on the motherboard (if you haven't tried already). You should at least be getting power. If you are not getting powered still then try taking it apart and putting it together again. Make sure to check for anything that could have gotten under or on the motherboard to cause a short.

Jup directly shorted the pins on the motherboard which previously (unsurprisingly) always worked, except this time

[AngryBeaver]

Just now, ChalkChalkson said:

Jup directly shorted the pins on the motherboard which previously (unsurprisingly) always worked, except this time

Have you made sure the 24pin and/or 8 pin connector are secure on the motherboard? You should also check to make sure they are secure on the PSU assuming they are modular.

[ChalkChalkson]

Just now, AngryBeaver said:

Have you made sure the 24pin and/or 8 pin connector are secure on the motherboard? You should also check to make sure they are secure on the PSU assuming they are modular.

On the PSU they are secure (used it to power another system). On the MoBo I plugged them in several times over, always making sure they are firmly locked in 

[AngryBeaver]

1 minute ago, ChalkChalkson said:

On the PSU they are secure (used it to power another system). On the MoBo I plugged them in several times over, always making sure they are firmly locked in 

Did you mess with the cmos jumper at all? For example if you left it shorted similar things to what you are describing could occur. For that matter have you tried resetting the Cmos for giggles?

 

Did you remove the CPU at all? Have you checked for bent pins? It might not be correctly seated in the socket for example... I would try taking it out, examining it and putting it back in.

[ChalkChalkson]

Just now, AngryBeaver said:

Did you mess with the cmos jumper at all? For example if you left it shorted similar things to what you are describing could occur. For that matter have you tried resetting the Cmos for giggles? 

2

Didn't mess with it, but didn't reset cmos either (thinking about that part of the mobo, I also didn't check the battery, though it would be a cruel coincidence if it ran out of juice now...)

 

Just now, AngryBeaver said:

Did you remove the CPU at all? Have you checked for bent pins? It might not be correctly seated in the socket for example... I would try taking it out, examining it and putting it back in. 

No, I didn't remove the CPU, kept it in the whole time, didn't even release the socket. Though even if the CPU wasn't in at all, it should still power on the PSU. It wouldn't really get far in the post, but the CPU can't really be involved in switching on the PSU, right?

[AngryBeaver]

4 minutes ago, ChalkChalkson said:

Didn't mess with it, but didn't reset cmos either (thinking about that part of the mobo, I also didn't check the battery, though it would be a cruel coincidence if it ran out of juice now...)

 

No, I didn't remove the CPU, kept it in the whole time, didn't even release the socket. Though even if the CPU wasn't in at all, it should still power on the PSU. It wouldn't really get far in the post, but the CPU can't really be involved in switching on the PSU, right?

If there is no CPU present the PSU will not power on.

[AngryBeaver]

Also if you have a power strip make sure you didn't hit the button on it. On the back of your psu there might also be a voltage switch. You might have bumped it and set it to an incorrect setting which would cause the system to fail to power on.

 The settings should be 115v or 230v IF you are in the USA the correct setting is 115V

[ChalkChalkson]

7 minutes ago, AngryBeaver said:

If there is no CPU present the PSU will not power on.

Guess I'll reseat it then though that will be a giant pain... turns out watercooling has it's downside  

[ChalkChalkson]

Just now, AngryBeaver said:

Also if you have a power strip make sure you didn't hit the button on it. On the back of your psu there might also be a voltage switch. You might have bumped it and set it to an incorrect setting which would cause the system to fail to power on.

 

Nope definitely doesn't have one and again, I validated the PSU itself through more than one method

[AngryBeaver]

1 minute ago, ChalkChalkson said:

Guess I'll reseat it then though that will be a giant pain... turns out watercooling has it's downside  

Unless you are using hard-tubing it should be pretty easy.

[ChalkChalkson]

Just now, AngryBeaver said:

Unless you are using hard-tubing it should be pretty easy.

Yeah... well my runs don't have much slack... (used to run PETG tubing and pretty much just replaced the runs with equal length of softened pvc a few years ago) But it's definitely worth a shot

[AngryBeaver]

1 minute ago, ChalkChalkson said:

Nope definitely doesn't have one and again, I validated the PSU itself through more than one method

Ok, here is another one I want to ask. Did you unplug the 24pin and 8 pin motherboard connectors? When you put them on sometimes the wire inside the plug gets pushed back. So I would check to make sure all of the pins are present and that none of them got pushed back. Also confirm that you are using the 8 pin connector if you have one.

[ChalkChalkson]

1 minute ago, AngryBeaver said:

Ok, here is another one I want to ask. Did you unplug the 24pin and 8 pin motherboard connectors? When you put them on sometimes the wire inside the plug gets pushed back. So I would check to make sure all of the pins are present and that none of them got pushed back. Also confirm that you are using the 8 pin connector if you have one. 

I checked, yeah - Used the exact same 24 and 8 pins to run a different system during debugging. If the connecting in those is at fault it's damaged pins on the board

[AngryBeaver]

3 minutes ago, ChalkChalkson said:

I checked, yeah - Used the exact same 24 and 8 pins to run a different system during debugging. If the connecting in those is at fault it's damaged pins on the board

Just to confirm when you hit the power button NOTHING happens? LIke the PSU never turns on correct?

[ChalkChalkson]

Just now, AngryBeaver said:

Just to confirm when you hit the power button NOTHING happens? LIke the PSU never turns on correct?

Jup.

 

Also btw thanks that you take that much time debugging this with me

[FRSHPRNCFBLR]

Not to doubt your abilities, just a sanity check. When you filled the system, did you use a separate 24 pin cable with the jumper? Aka is the one connected to the motherboard dangling around while another one is connected to the psu? 

 

 

[FRSHPRNCFBLR]

Also, can you hear a click coming from the psu? There should be a relay kind of sound. 

[ChalkChalkson]

Just now, FRSHPRNCFBLR said:

Not to doubt your abilities, just a sanity check. When you filled the system, did you use a separate 24 pin cable with the jumper? Aka is the one connected to the motherboard dangling around while another one is connected to the psu?  

 

 

Nope only one 24 pin connected to the motherboard. And when I used the other system to check the PSU I pulled the 24 pin directly out of the motherboard

[ChalkChalkson]

18 minutes ago, FRSHPRNCFBLR said:

Also, can you hear a click coming from the psu? There should be a relay kind of sound. 

Yes there should be and there is when the PSU turns on, but that flat out doesn't happen when I try to power the system on. I hear it when I short the PSU and I hear it when I hook it up to another system, in both cases the case LEDs as well as my own LED also turn on immediately. Neither happens with this thing.

[ChalkChalkson]

54 minutes ago, AngryBeaver said:

Did you mess with the cmos jumper at all? For example if you left it shorted similar things to what you are describing could occur. For that matter have you tried resetting the Cmos for giggles?

 

Checked all the jumpers on the mobo, non are shorted. Also reset CMOS

Quote

Did you remove the CPU at all? Have you checked for bent pins? It might not be correctly seated in the socket for example... I would try taking it out, examining it and putting it back in.

Just reseated the CPU. No bent pins either.

Edited July 28, 2019 by ChalkChalkson
fixed a typo

[AngryBeaver]

2 minutes ago, ChalkChalkson said:

Checked all the jumpers on the mobo, non are shorted. Also reset CMOS

Just reseated the CPU. No bent pins either.

At this point It might be a problem with the motherboard... so not sure what would have caused that unless you scratched it or dropped something on it.