[SOLVED] PC Only Post with certain GPU

[XXX MOZZY]

Specs -
Ryzen 7 1700
MSI B550-Pro(latest bios)

The card that works is my test card that I got from a Dell oltiplex, that uses power from the pcie slot.

I have tried

Rx 5700
Rx 5700xt
Rx 480 8gb x3
RTX 3060

And the only one that gets to post without the vga light on the motherboard is the
EVGA GeForce 8400 GS 512MB DDR3 PCI Express 2.0 x16

I have tried 3 different power supplies even though I do know they all work

Please help, or do I return the motherboard?

 

[Lutfij]

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

 

[XXX MOZZY]

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

Ryzen 7 1700
ID-Cooling tower cooler
KLLISRE 2x16gb 3200mhz CL22 (tested with memtest86 and used in my main rig for 2 weeks)
MSI B550-A PRO
E7C56AMS.AF0

Trying to put in a sapphire rx 5700 blower

Fractal Pop Air

EVGA 600B 80+ Bronze

 

[XXX MOZZY]

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

I fixed the problem, I switched the pcie Slot to 3rd gen. Then I put in the rx 5700 and it booted up.

If someone who also has this problem you may wants to try turning of rebar aswell but rebar works for me currently