MSI X399 Mobo Won't POST

[jpriest128]

Hi, trying to setup a new AMD TR2 2990wx build.

I have never gotten it to POST. I've never been in the BIOS or installed an OS.

 

I have double checked all power cables, flashed the newest bios, reset CMOS, tried reseating ram in dozens of configurations, but still can't POST. There's a hex display that gets stuck on C0 which is undocumented in the manual. The EZDebug LEDs show CPU for maybe 5 seconds then get stuck on DRAM.

 

 Is there anything left to try besides ripping everything apart to reseat CPU or RMA it? I spent several hours carefully building so I really don't want to do those

 

Motherboard: MSI X399 GAMING PRO CARBON AC

CPU: AMD TR2 2990wx

Memory: 4x8GB 3200 G.Skill F4-3200C14D-16GTZSK

GPU: Nvidia GTX 770

PSU: EVGA 1000w

Other: An M.2 drive and 5 SATA drives.

[Streetguru]

13 minutes ago, jpriest128 said:

 

Probably just reseat the CPU if that's the only thing you haven't done yet, may take a few attempts.
 

 

[i_build_nanosuits]

Try with a single RAM stick...maybe you have a bad one in there.

[jpriest128]

I had a friend come over and help me clean off cpu/heatsink and reseated it. I've also tried using just a single stick (tried every one of my four by themselves). Still stuck with EZDebug on DRAM and hex display C0

[Streetguru]

19 minutes ago, jpriest128 said:

I had a friend come over and help me clean off cpu/heatsink and reseated it. I've also tried using just a single stick (tried every one of my four by themselves). Still stuck with EZDebug on DRAM and hex display C0

Did you already contact MSI? may just be a bad board.

[jpriest128]

I had a replacement shipped by Amazon but it has the exact same problem. I'm at a loss for what to do. I can try calling MSI tomorrow morning but I don't have high hopes. If I start returning the RAM and the CPU Amazon will likely be pretty unhappy with me.

[sergi]

I have exactly the same problem with MSI X399 + 2990WX

 

Have you solve it?

[Origami Cactus]

2 hours ago, sergi said:

I have exactly the same problem with MSI X399 + 2990WX

 

Have you solve it?

 

On 9/14/2018 at 2:24 AM, jpriest128 said:

I had a replacement shipped by Amazon but it has the exact same problem. I'm at a loss for what to do. I can try calling MSI tomorrow morning but I don't have high hopes. If I start returning the RAM and the CPU Amazon will likely be pretty unhappy with me.

Have you guys updated the bios to the latest version?

It seems like bios version 7B09v1A added support for second gen threadripper, so if you are using an older bios no wonder it doesnt work.

https://www.msi.com/Motherboard/support/X399-GAMING-PRO-CARBON-AC