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CPU RED LED on - Gigabyte x570 Master with Ryzen 9 3900x - first boot

Joined
Aug 24, 2019
Messages
3 (0.12/day)
Processor Ryzen 9 3900x
Motherboard Gigabyte Aorus x570 Master
Cooling Masterliquid ML360R RGB
Memory 2x16Gb G.Skill Tridentz Neo 3200 (F4-3200C14D-32GTZN)
Video Card(s) Gigabyte Radeon RX 5700 XT
Storage Corsair MP600 2T
Display(s) AOC AG273QCX 27
Case Cooler Master H500M
Audio Device(s) None
Power Supply EVGA Supernova 750 G3
Mouse Logitech hero G502
Keyboard Aorus K9
Software None yet
Benchmark Scores None yet
Good evening community,

This is my 3rd build in 3 years and never had any problem - thus not a pro but an enthousiast.

Just finished the build this afternoon (after waiting for Ryzen 9 3900x to come out of back order) and on first boot (before installing windows 10) to go into the BIOS/UEFI : CPU RED LED on!!!!! So, unplugged everything and plugged back in again (listen for all the clicks, etc...); also took the CPU out and put it back in again gently, locked and put gently the cooler on top not to put to much pressure, etc.) and... NO LUCK.

Everything else lights up and works (GPU - fan working; G.Skill Neo, fans, Mastercooler liquid, etc...).

Also, the BIOS LED indicators (MBIOS_LED and BBIOS_LED) are lightning up in an alternative pattern every 15-20 secondes.

Any ideas what's going on?

I wrote to Gigabyte but will get an answer in 3-7 business days....

Thanks in advance to everyone who will take the time to reply, much appreciated.
 
Joined
Feb 22, 2019
Messages
596 (2.87/day)
System Name Fatboii
Processor AMD Ryzen 7 3700X @ 4.2 GHz (all cores)
Motherboard ASUS Crosshair VIII Hero WiFI
Cooling Custom water
Memory G.SKILL Trident Z RGB 3200MHz C14 @ 3733 C16
Video Card(s) EVGA GTX 1080 Ti FTW3 under water
Storage Samsung SM951 256GB + 860 EVO 1TB
Display(s) ASUS ROG PG278Q 144Hz
Case Fractal Design R6 Tempered Glass
Audio Device(s) Onboard
Power Supply EVGA SuperNOVA G3 850w
Mouse Logitech G502
Keyboard Cooler Master Pro Keys L
Software Win 10 Pro
Benchmark Scores I only game on this system... built for silence, not absolute max performance. ;)
Sounds like a bad motherboard to me. It happens.

Doing all of the usual checking, I’m assuming you’ve plugged in the 8 pin EPS power connector..? Hopefully it’s something as simple as that.
 
Joined
Aug 24, 2019
Messages
3 (0.12/day)
Processor Ryzen 9 3900x
Motherboard Gigabyte Aorus x570 Master
Cooling Masterliquid ML360R RGB
Memory 2x16Gb G.Skill Tridentz Neo 3200 (F4-3200C14D-32GTZN)
Video Card(s) Gigabyte Radeon RX 5700 XT
Storage Corsair MP600 2T
Display(s) AOC AG273QCX 27
Case Cooler Master H500M
Audio Device(s) None
Power Supply EVGA Supernova 750 G3
Mouse Logitech hero G502
Keyboard Aorus K9
Software None yet
Benchmark Scores None yet
Yes, both of them so I can OC.
 

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Joined
Feb 22, 2019
Messages
596 (2.87/day)
System Name Fatboii
Processor AMD Ryzen 7 3700X @ 4.2 GHz (all cores)
Motherboard ASUS Crosshair VIII Hero WiFI
Cooling Custom water
Memory G.SKILL Trident Z RGB 3200MHz C14 @ 3733 C16
Video Card(s) EVGA GTX 1080 Ti FTW3 under water
Storage Samsung SM951 256GB + 860 EVO 1TB
Display(s) ASUS ROG PG278Q 144Hz
Case Fractal Design R6 Tempered Glass
Audio Device(s) Onboard
Power Supply EVGA SuperNOVA G3 850w
Mouse Logitech G502
Keyboard Cooler Master Pro Keys L
Software Win 10 Pro
Benchmark Scores I only game on this system... built for silence, not absolute max performance. ;)
No need for both of them to OC, but good to see that they are in.

I would suspect a bad motherboard at this stage. Have you tried booting it up outside of the case?

I would suggest loosening your CPU cooler as well. It's weird, but too much pressure can cause a failure to boot. Give it a try and see what happens.
 
Joined
Aug 24, 2019
Messages
3 (0.12/day)
Processor Ryzen 9 3900x
Motherboard Gigabyte Aorus x570 Master
Cooling Masterliquid ML360R RGB
Memory 2x16Gb G.Skill Tridentz Neo 3200 (F4-3200C14D-32GTZN)
Video Card(s) Gigabyte Radeon RX 5700 XT
Storage Corsair MP600 2T
Display(s) AOC AG273QCX 27
Case Cooler Master H500M
Audio Device(s) None
Power Supply EVGA Supernova 750 G3
Mouse Logitech hero G502
Keyboard Aorus K9
Software None yet
Benchmark Scores None yet
No need for both of them to OC, but good to see that they are in.

I would suspect a bad motherboard at this stage. Have you tried booting it up outside of the case?

I would suggest loosening your CPU cooler as well. It's weird, but too much pressure can cause a failure to boot. Give it a try and see what happens.
Yes for trying outside the case; and
The CPU cooler can't be looser than right now... :)
 
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