MSI AM4 X370 Gaming 7 ACK not posting (Error Code E7)

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ClassicTheBlue

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Hi there! I'm trying to put together a new build:

MSI AM4 X370 Gaming 7 ACK
Ryzen 5 2600 3.9 GHz 6‑Core
8GB Patriot Viper Elite 2666mhz
1tb WD Black Caviar
MSI GTX 970 4gb
Seasonic EVO 620w

I've assembled all the primary components (CPU, MOBO, RAM, GPU, PSU) in an attempt to test-boot it before I start cable managing, etc. My issue comes when attempting to post as it quickly runs through several codes before landing on code E7 ("Reserved for future AMI progress codes" -Manual). I've tried clearing CMOS, disconnecting/reconnecting certain components as well as cycling the RAM and replacing the battery cell but I've had no luck so far. Any suggestions? Or is this just a defective motherboard? :/

Any help would be much appreciated.

Thanks in advance!
 
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rocktalkrock
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ClassicTheBlue

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Feb 1, 2016
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Yeah, I read up a few other posts with similar issues and thought I'd try flashing the bios. I've just finished going through every version available with no success.

Also, how would I set the CPU speed if I can't access the bios? If you could walk me through that process that'd be great.
 
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rocktalkrock

rocktalkrock

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No need to change the CPU speed. Since you listed your CPU as Ryzen 5 2600 3.9 GHz, i thought you were overclocking it.

1. If you are using 2 sticks of RAM, try booting with just 1 stick.
2. If your motherboard is already installed in the case, try removing it and booting outside the PC case.
 
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ClassicTheBlue

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Oh true, I'm sorry that was a typo. I believe the actual speed is 3.6. I've already run through each RAM configuration possible and I just tried removing the system from the case. Unfortunately still no luck. I think it may be helpful to mention that on one of the bios versions that I flashed to, the error code changed to 55 from E7. I read somewhere that 55 is the code for unrecognized memory so I've also tried using different RAM quantities as well as switching out different RAM speeds (2133, 2400), nothing changed though.

Thanks for your help btw, it's much appreciated. :)

 
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rocktalkrock

rocktalkrock

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Are you booting without any drives connected?
 
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ClassicTheBlue

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Yes, only the basics have been plugged in. (CPU, MOBO, RAM, GPU, PSU)

 
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rocktalkrock

rocktalkrock

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At this point you need to remove the CPU and look for any bent pins, then carefully re-install the CPU and cooler.
Make sure the RAM is pushed all the way down in it's slot, at both ends.
 
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ClassicTheBlue

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Okay, so I tried that today. I looked over the pins very carefully and couldn't find anything bent or off-put. I'm still getting the error. When switching the RAM and turning the machine on, the LEDs over each loaded RAM socket glow. I tried switching the configuration and so did the LEDs accordingly, so some part of the motherboard must recognize the sticks. For some reason, though, it's still not posting.
 
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rocktalkrock

rocktalkrock

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1. The motherboard manual recommends using memory slot DIMMA2 when installing only 1 stick of RAM.
2. What do the 4 small EZ Debug LED's, just above the 24-pin power connector, show when you boot?

Important: Always insert memory modules in the DIMMA2 slot first.

EZ Debug LED
These LEDs indicate the debug status of the motherboard.

CPU - indicates CPU is not detected or fail.
DRAM - indicates DRAM is not detected or fail.
VGA - indicates GPU is not detected or fail.
BOOT - indicates the booting device is not detected or fail.
 
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ClassicTheBlue

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Looks like the VGA LED turns on as well as the DRAM LEDs for wherever the RAM is inserted. They aren't blinking or anything, just consistently glowing as soon as I start the machine. Though the VGA LED does turn on distinctly after the RAM LEDs do.

Would probably be good to note that the GPU has never actually powered on any of these test boots. The GPU aesthetic green lighting never actually turns on and the fans never start spinning. The thing is I know the GPU works as I just tested it in my other PC.

 
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rocktalkrock

rocktalkrock

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Try booting with the video card in the 2nd x16 slot to see if that makes any difference.
 
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ClassicTheBlue

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Yeah, I just tried that and nothing changed. I also just ran the RAM through my other PC and they're working just fine as well. :??:

 
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ClassicTheBlue

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Okay, so I've solved the GPU issue, turns out the power cord wasn't %100 in. Also, I bought I second identical motherboard to see if it was a motherboard defect and I've seemed to make it past E7, but now it's stuck on 55. I'm starting to think it may be a RAM speed incompatibility issue as the CPU definitely doesn't have any bent pins. I'm running DDR4 2666 and I've also tried 2400, but I haven't tried 2133. So my plan as of now is to try to pick up a pack of DDR4 2133 and see if it runs on that.

 
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rocktalkrock

rocktalkrock

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Have you contacted MSI Customer support on their website for help with this problem? The X370 GAMING M7 ACK is a high end motherboard designed to run RAM speeds of at least 2400MHz, so even if you get it to boot with 2133MHz RAM it's still not working properly. MSI Technical support may have an idea of what is going wrong with your setup.
 
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