F5F Stay Refreshed Hardware Desktop Trying to figure out why your Threadripper Pro isn't posting. Need some guidance on possible issues.

Trying to figure out why your Threadripper Pro isn't posting. Need some guidance on possible issues.

Trying to figure out why your Threadripper Pro isn't posting. Need some guidance on possible issues.

R
runner123467
Member
219
09-24-2025, 03:38 PM
#1
I'm facing difficulties getting my new machine to post. I've tried everything and still can't resolve the issue. I feel like I've exhausted all options. The specs are listed, but nothing seems to work. I've tested the CPU, re-assembled the board multiple times, checked RAM placement, updated BIOS, flashed CMOS, and even used IPMI for remote diagnostics. It still doesn't post. The motherboard and CPU both show error code "7C" and have a warning light. Since this is intended as a server, I'm unsure what might be wrong with my setup. I'm not sure if I'm making any mistakes, but I'm really stuck. Please help me out!
R
runner123467
09-24-2025, 03:38 PM #1

I'm facing difficulties getting my new machine to post. I've tried everything and still can't resolve the issue. I feel like I've exhausted all options. The specs are listed, but nothing seems to work. I've tested the CPU, re-assembled the board multiple times, checked RAM placement, updated BIOS, flashed CMOS, and even used IPMI for remote diagnostics. It still doesn't post. The motherboard and CPU both show error code "7C" and have a warning light. Since this is intended as a server, I'm unsure what might be wrong with my setup. I'm not sure if I'm making any mistakes, but I'm really stuck. Please help me out!

D
DrinkMoreMilk
Junior Member
43
09-25-2025, 08:57 PM
#2
Have you experimented with another type of RAM? The most likely reason seems to be faulty RAM, given that you've already swapped out the CPU and motherboard. From what I understand, you've only tested RAM sticks from the existing kit in various slots, rather than using a completely different set. That would be my next move. I'd also consider a different brand and model. As a server user, I'd prefer genuine server-grade memory instead of the basic Corsair LPX.
D
DrinkMoreMilk
09-25-2025, 08:57 PM #2

Have you experimented with another type of RAM? The most likely reason seems to be faulty RAM, given that you've already swapped out the CPU and motherboard. From what I understand, you've only tested RAM sticks from the existing kit in various slots, rather than using a completely different set. That would be my next move. I'd also consider a different brand and model. As a server user, I'd prefer genuine server-grade memory instead of the basic Corsair LPX.

L
Lunaax_
Junior Member
12
09-26-2025, 03:49 AM
#3
The Threadrippers require careful handling and should be tightened according to the provided guidelines and the included device. Besides this, components such as the PSU can be tested on a different machine, though options are limited.
L
Lunaax_
09-26-2025, 03:49 AM #3

The Threadrippers require careful handling and should be tightened according to the provided guidelines and the included device. Besides this, components such as the PSU can be tested on a different machine, though options are limited.

M
Max_PlaysMC
Member
62
09-27-2025, 11:17 AM
#4
I've checked other RAM options, but none were available in the QVL for the motherboard. I'll give it another shot and see if I can locate something!
M
Max_PlaysMC
09-27-2025, 11:17 AM #4

I've checked other RAM options, but none were available in the QVL for the motherboard. I'll give it another shot and see if I can locate something!

R
Rexty_
Senior Member
568
09-27-2025, 05:07 PM
#5
I confirmed the tightening is accurate at 13.3 in.lbs (the threadripper spec). Also checked that the PSU functions with a 13th gen i9 and 3090 (both passed stress tests), indicating it should work well.
R
Rexty_
09-27-2025, 05:07 PM #5

I confirmed the tightening is accurate at 13.3 in.lbs (the threadripper spec). Also checked that the PSU functions with a 13th gen i9 and 3090 (both passed stress tests), indicating it should work well.

S
SGgamingDK
Member
222
10-05-2025, 12:48 AM
#6
I've attempted to install a GPU and start it up, but I removed it because I disassembled everything. It's currently sitting in my test bench (the motherboard box, by the way). I've documented everything on the bench. The warning "needing 1 stick per channel" caught my attention—I've tried filling all slots to boot it, but only with non-QVL memory. Today I received some ECC sticks for QVL, though a 128GB model was expensive, so I decided to grab just one for testing. It might be worth acquiring more ECC memory if needed.
S
SGgamingDK
10-05-2025, 12:48 AM #6

I've attempted to install a GPU and start it up, but I removed it because I disassembled everything. It's currently sitting in my test bench (the motherboard box, by the way). I've documented everything on the bench. The warning "needing 1 stick per channel" caught my attention—I've tried filling all slots to boot it, but only with non-QVL memory. Today I received some ECC sticks for QVL, though a 128GB model was expensive, so I decided to grab just one for testing. It might be worth acquiring more ECC memory if needed.

Z
ziggly27
Junior Member
36
10-05-2025, 05:56 AM
#7
I acquired some ECC memory that's already in the QVL, but it didn't boot properly. Only one stick was recognized, so I didn't fill all the channels. The manual mentions it's okay to use a single stick, but I checked the B2 dimming slot—this is the method I tried with the new ECC memory.
Z
ziggly27
10-05-2025, 05:56 AM #7

I acquired some ECC memory that's already in the QVL, but it didn't boot properly. Only one stick was recognized, so I didn't fill all the channels. The manual mentions it's okay to use a single stick, but I checked the B2 dimming slot—this is the method I tried with the new ECC memory.