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MSI B450M Pro M2 boot problems

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After my error of not realising there's no IGP on board, I'm now having some weird boot problems with this motherboard.
From cold it's hanging on the Ez Debug CPU Led, but if I hit the reset button it boots normally.
I've removed the Ryzen 2600, inspected it and found no bent pins or anything else untoward. When it boots, Windows runs perfectly normally, although I've had several BSODs.
I've read about similar issues on the MSI forums with B450 motherboards but haven't yet found a definitive answer, apart from updating the BIOS, which I've already done.
This issue didn't coincide with anything in particular and at first I thought it was a quirk of this motherboard. (I had a similar issue once with a Gigabyte mobo double booting, which I solved by turning off core unlock. But that's a different story.)
Sometimes, not even the power light comes on, yet all the fans are spinning.
It's annoying because it's a customer build, so tomorrow looks like a breadboard job and luckily I have another Ryzen PC for testing purposes. I'll update progress tomorrow.
(I know there's another thread with a similar issue, but I didn't want to hijack that one :) )
 
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assemble components as the intended ( normal ) build. YOu can do 1 of two things, remove the battery for 30 seconds or boot into the BIOS and reset it to default settings.
 

Mussels

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your stability issues are due to running 4 sticks of ram on ryzen, you dont specify what RAM but if its corsair LPX its well known as a problem for ryzen with just two sticks, let alone four.
 
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Removed battery already and reset BIOS to defaults. I'm running 2 x 8Gb Oloy memory as mentioned in this thread. The mobo only has two memory slots.
I'm now going to start from the beginning.
 

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I went by your system specs, and assumed you were talking about the same ram. didnt check slot count either, my mistake there.
 
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Sorry, I should have been clearer. It's a new build for a customer.
MSI B450 Pro-M2 with latest BIOS
Ryzen 2600
Mem Oloy 2 x 8Gb
SSD Intel 545s series 256Gb
PSU Thermaltake Smart 80Plus 700w
GPU MSI Armor RX570 8Gb

I'm beginning to narrow it down to the PSU, but I'm dubious because I've just tried it in two other PCs and both boot normally. In fact, one of them has an identical NZXT Phantom case. I had been a little doubtful about the FP (power, Reset etc) connectors, but that may be a long shot.
The reason for my suspicions about the PSU is that in breadboard mode, I tried another quality Thermaltake 600w PSU and it booted normally several times cold and warm.
The 700w that goes with the build, causes problems ONLY with the MSI B450 mobo, with all settings on default and the BIOS reset by removing the battery.
I also removed and reset the CPU to check for bent pins. All okay there.
The only thing I haven't done is try the memory in another PC, but I have tried them individually in the 2 slots, with no apparent problems.
I'm wondering if there are any power options on the MSI mobo that affect this.
:confused:
Update:
It seems to be the Oloy memory that's causing the problems. I put one stick, then two of my Corsair LPX into the mobo and there were no boot problems with either of the PSUs.
On the other hand, the Oloy memory cause no problems in my main machine with the Asus Crosshair Hero VII, so it has to be a compatibility issue, methinks.
 
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eidairaman1

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Sorry, I should have been clearer. It's a new build for a customer.
MSI B450 Pro-M2 with latest BIOS
Ryzen 2600
Mem Oloy 2 x 8Gb
SSD Intel 545s series 256Gb
PSU Thermaltake Smart 80Plus 700w
GPU MSI Armor RX570 8Gb

I'm beginning to narrow it down to the PSU, but I'm dubious because I've just tried it in two other PCs and both boot normally. In fact, one of them has an identical NZXT Phantom case. I had been a little doubtful about the FP (power, Reset etc) connectors, but that may be a long shot.
The reason for my suspicions about the PSU is that in breadboard mode, I tried another quality Thermaltake 600w PSU and it booted normally several times cold and warm.
The 700w that goes with the build, causes problems ONLY with the MSI B450 mobo, with all settings on default and the BIOS reset by removing the battery.
I also removed and reset the CPU to check for bent pins. All okay there.
The only thing I haven't done is try the memory in another PC, but I have tried them individually in the 2 slots, with no apparent problems.
I'm wondering if there are any power options on the MSI mobo that affect this.
:confused:
Update:
It seems to be the Oloy memory that's causing the problems. I put one stick, then two of my Corsair LPX into the mobo and there were no boot problems with either of the PSUs.
On the other hand, the Oloy memory cause no problems in my main machine with the Asus Crosshair Hero VII, so it has to be a compatibility issue, methinks.
It is oloy memory is new on the block and hasnt been tested.

I stick with gskill, mushkin, patriot, geil, teamgroup.
 
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Memory Corsair Vengeance 32GB (4x8GB) 2400Mhz
Video Card(s) Asus ROG Strix RX580 OC 8Gb
Storage 250Gb Samsung EVO SSD, OCZ 500Gb SSD WD M.2 500Gb, plus three spinners up to 1.5Tb
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Audio Device(s) Supreme FX on board
Power Supply Corsair RM850X full modular
Mouse AFX LMO216
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Benchmark Scores 3DMark Time Spy 4532
After hours of testing, I eventually changed the Oloy memory for a pair of Ballistix and the problem has now been solved.
 
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