taichi x399 does not post

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   Hello everyone!

Built a system using taichi x399. All components are brand new. Removed everything except the cpu and cooler & removed the board from the case for debugging. 24 pin is connected & power cable for cpu cooler is connected. If to believe the sticker on the board then fw is 1.5

I get the following symptoms:

a) both 8 pin and 4 pin cpu cable connected - the psu clicks when i try to turn on the system and that's it. No fans. Nothing. No further attempts possible until psu has been powered off / on again. Sounds like a short circuit protection mechanism kicking in if you ask me but then again, I'm no expert.

*4 pin connector is connected with the latch on the right.

b) just 8 pin connected - fans start, debug display stops at c0 and a reboot cycle starts. As I understand, this is perfectly normal as this board requires both 4 pin and 8 pin? I have read contradicting statements about it though, so any further information is most welcome.

Both cables are cpu cables as far as i know i.e 8pin-2x4pin

What should I try next? Sounds like a problem with the cpu or socket but i really wouldn't want to remove the cooler & cpu before I have ruled out other options.

It's my first build so I suppose we should consider all possible rookie mistakes

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Bear Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27 Jun 2018 Status: Offline Points: 4	Post Options Post Reply Quote Bear Report Post Thanks(0) Quote Reply Topic: taichi x399 does not post Posted: 27 Jun 2018 at 7:06pm
	Hello everyone! Built a system using taichi x399. All components are brand new. Removed everything except the cpu and cooler & removed the board from the case for debugging. 24 pin is connected & power cable for cpu cooler is connected. If to believe the sticker on the board then fw is 1.5 I get the following symptoms: a) both 8 pin and 4 pin cpu cable connected - the psu clicks when i try to turn on the system and that's it. No fans. Nothing. No further attempts possible until psu has been powered off / on again. Sounds like a short circuit protection mechanism kicking in if you ask me but then again, I'm no expert. *4 pin connector is connected with the latch on the right. b) just 8 pin connected - fans start, debug display stops at c0 and a reboot cycle starts. As I understand, this is perfectly normal as this board requires both 4 pin and 8 pin? I have read contradicting statements about it though, so any further information is most welcome. Both cables are cpu cables as far as i know i.e 8pin-2x4pin What should I try next? Sounds like a problem with the cpu or socket but i really wouldn't want to remove the cooler & cpu before I have ruled out other options. It's my first build so I suppose we should consider all possible rookie mistakes

Bear Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27 Jun 2018 Status: Offline Points: 4	Post Options Post Reply Quote Bear Report Post Thanks(0) Quote Reply Posted: 03 Jul 2018 at 9:31am
	Conducted some additional tests. 1) Tested the PSU with another system to make sure it could handle some load. Seemed to work OK. 2) Removed the CPU from the board. With all the power cables & the cpu fan connected I get nothing from the board except the fancy leds. No dr debug codes, no cpu (liquid cooling) fan. Is this normal or should I assume the board is the culprit?