Question Anything else I should try before replacing motherboard?

[klapaucius]

X299 PC worked for 1 1/2 years now completely dead. No lights or fans or anything at button push. I have:

1. Verified case switch works
2. PSU passes the paperclip test and voltages look okay
3. Tried with only 1 stick of memory in each slot

Just hoping it isn't the CPU, those 18-cores are expensive.

 

[Captain Discombobulate]

If the cpu was dead the motherboard would most likely still try to boot. I would try to borrow another psu and see if that is the issue.

 

[klapaucius]

If the cpu was dead the motherboard would most likely still try to boot. I would try to borrow another psu and see if that is the issue.

You still suspect the PSU even if it works with the paperclip? By work I mean all the lights in the case turned on, and you can hear the PSU fan going. And I measured +3.3V, +5V, and +12V on the 24-pin connector with a voltmeter.

I don't have another supply to use, so would have to buy one...

 

[Captain Discombobulate]

You still suspect the PSU even if it works with the paperclip? By work I mean all the lights in the case turned on, and you can hear the PSU fan going. And I measured +3.3V, +5V, and +12V on the 24-pin connector with a voltmeter.

I don't have another supply to use, so would have to buy one...

With what you are explaining for symptoms it could be a dead cpu, motherboard or psu issue. Pretty hard to troubleshoot any of these without having a spare around to test each part.

 

[sizzling]

You still suspect the PSU even if it works with the paperclip? By work I mean all the lights in the case turned on, and you can hear the PSU fan going. And I measured +3.3V, +5V, and +12V on the 24-pin connector with a voltmeter.

I don't have another supply to use, so would have to buy one...

The paper clip test is very limited in its usefulness. It cannot show a psu works, it can only show you when a psu is completely dead/unresponsive. You don’t know if the psu can deliver the correct voltages under operating load, a no/minimal load reading isn’t conclusive. I’m not saying the problem is the psu but you cannot rule it out using the paper clip test.