MSI x370 Gaming Pro Carbon WON'T BOOT (most of the time)

Batman808401

Prominent
Jun 18, 2017
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510
Here is a link to my entire setup: My PC part picker list All parts are from my old setup which is nearly 6 months old except for the motherboard, CPU, and RAM

Here's the problem:
As of right now, I'm am using this computer to make this post, however, I am afraid to turn it off. Whenever I turn off my PC, it'll only take minutes of powering off and on and mashing the reset button to get it up and running again. Once it starts, everything seems and feels normal. The weird thing is that I can put my PC to sleep and turn it on again no problem.

How I get it working and observations:

  • The first time I power on my PC, it is most likely to fail on successfully booting up so I've sequentially listed how I get my PC up and running like normal starting on unsuccessful boot:

  • FIRST STEP - ON UNSUCCESSFUL BOOT: Case fans and LEDs work, Wraith Spire fan and AMD LED ONLY (not the ring) work, GPU LED and fans work, onboard CPU debugging LED lights up, onboard RAM detection LEDs are on, onboard GPU detection LED is not on, and finally: all other onboard LEDs  are off and no display on monitor.

  • SECOND STEP - HALF SUCCESSFUL BOOT: After a period of powering my PC on and off, the previous conditions still apply including no display to the monitor, however, onboard aesthetic LEDs turn on including the Wraith Spire cooler ring LED. This is the point where I start pressing the reset button on my case in 10-second intervals. Also, note that the onboard CPU debug LED is still on at this point.

  • SUCCESSFUL BOOT: Finally, the onboard CPU debug LED turns off and onboard GPU detection LED turns on and monitor detects the source. Everything appears to be working as it should such as LEDs, hardware, etc. 

  • Once I'm done using my PC, I power it off like it should be only for me to come back needing to use it again and having to repeat this process for an average of 10 minutes.

My conclusion/possible issues:

  • The motherboard is highly unstable as far as detecting the CPU and GPU  and not completely powering on, on initial startup.
  • I thought it could be anything else such as the power, CPU, or GPU but is highly unlikely since they are crucial to keep the PC functioning properly and so far, I have not had any crashes or other hardware issues. 

  • I can enter sleep mode and power back on successfully.

  • I'm really considering declaring this motherboard DOA and sending it back for a new one but that is the last thing I want to do.

What I've tried:

  • Checking for loose cables such as power, case, and fan headers

  • Checking if all parts are secured and connected physically and from the BIOS
    I haven't tried the reset CMOS button because it is a brand new motherboard and I haven't changed any major settings

PLEASE REPLY IF: YOU'RE HAVING SIMILAR ISSUES WITH NEWER MOTHERBOARDS WITH AM4 CHIPSETS; ESPECiALLY  IF YOU HAVE THE SAME MOTHERBOARD; HAVE SOLUTIONS/TROUBLESHOOTING SUGGESTIONS; ANY OTHER QUESTIONS REGARDING MY SITUATION; IF I MUST MAKE ANY CHANGES TO THIS POST IN FAVOR OF PROFFETIONAL REVIEW AND DOCUMENTATION;
 
Solution
I know this might be a bit of a headache for you to try, but I noticed you purchased a dual monitor setup.

A little bit about my system quickly, I have my computer, 1 monitor, and my TV in the living room, most of the time only my monitor is plugged into the graphics card by HDMi cable and I dont have any problems, but when I download movies, or stream movies, rather than burning them to a DVD to watch them on my TV, I just plug my TV via a very long HDMi cable into the graphics card, this cable is normally sitting behind my computer doing nothing......now on to my point, if I forget to unplug this second cable, and restart my computer, or shut it down for the night, when it comes to powering back on, I experience all sorts of...

Seanie280672

Estimable
Mar 19, 2017
1,958
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2,960
I know this might be a bit of a headache for you to try, but I noticed you purchased a dual monitor setup.

A little bit about my system quickly, I have my computer, 1 monitor, and my TV in the living room, most of the time only my monitor is plugged into the graphics card by HDMi cable and I dont have any problems, but when I download movies, or stream movies, rather than burning them to a DVD to watch them on my TV, I just plug my TV via a very long HDMi cable into the graphics card, this cable is normally sitting behind my computer doing nothing......now on to my point, if I forget to unplug this second cable, and restart my computer, or shut it down for the night, when it comes to powering back on, I experience all sorts of problems, until I finally remember, wait a min, that damn second cable is still plugged in, as soon as I remove it and power on, all the problems are gone.

So my suggestion to try first of all, is shut down your computer, unplug 1 of the cables to your monitor from your graphics card, and then try a startup, see if it makes any difference.
 
Solution

Batman808401

Prominent
Jun 18, 2017
2
0
510


Thanks for your suggestion, and great observation! I'm actually using one of the monitors right now but I'll try different display inputs on my GPU.

I can't do it right now but I'll keep you updated whenever I get the chance.