Computer won't post - Red Devil 6800XT

[icicleCrash]

Hi guys! I recently obtained a PowerColor Red Devil 6800XT. When installed, the PC turns on, but the VGA debug LED stays lit. Attached are pics of the Red Devil installed and the VGA LED.

Here are my specs:

• AMD Ryzen 5600X
• Cooler Master Hyper 212-EVO (1st version)
• ASUS TUF Gaming X570-PLUS WiFi
• 2x16GB Crucial Ballistix DDR4-3600 (D.O.C.P turned off, for now)
• PowerColor Red Devil RX 6800XT
• EVGA GQ 650W, 80+ GOLD
• 1x Seagate Barracuda 1TB 7200rpm
• 1x Crucial MX500 1TB SSD
• 1x SAMSUNG SM951 M.2 2280 256GB SSD

The 650W PSU I currently have came from my brother's system. He used it for his 3080, until he upgraded to the 850W. I tested the GPU on his system (AMD Ryzen 3600, MSi B450 Gaming Pro Carbon AC, EVGA 3080 FTW3 Ultra, 2x8GB G.Skill DDR4-3200, Corsair RMx 850W 80+ GOLD), and it posted and booted into Windows. The weird thing is, I'm currently using an EVGA SC 1070 with my computer, and it works flawlessly. 

 

Here are the troubleshooting steps I've taken so far:

1. Made sure monitors were working.
2. Made sure all power cables were secure.
3. For the motherboard, installed the AMD Chipset Driver V2.11.26.106 and AMD VGA driver 27.20.14524.0 (from here)
4. Reseated RAM
5. Tried to post with only CPU, GPU, and 1 stick of RAM - didn't work
6. Cleared CMOS
7. Updated motherboard BIOS to the latest version

Thank you so much for your help!

[mr cheese]

this sounds stupid, but try another display output. I think recently with my 3060ti I discovered that if I don't have a valid display plugged in the computer won't post, could be a fluke, but it's worth a shot. Different monitors, different connections types (HDMI and DP), go from there

[icicleCrash]

29 minutes ago, DaJakerBoss said:

this sounds stupid, but try another display output. I think recently with my 3060ti I discovered that if I don't have a valid display plugged in the computer won't post, could be a fluke, but it's worth a shot. Different monitors, different connections types (HDMI and DP), go from there

Hey! Thanks for the suggestion. I tried it out, but unfortunately, using different monitors and connection types didn't work.

[Bitter]

What happens if you turn PCIe down to 3.0 from 4.0?

[icicleCrash]

13 minutes ago, Bitter said:

What happens if you turn PCIe down to 3.0 from 4.0?

Darn, still no post and the white VGA LED is still lit.

[icicleCrash]

I'm thinking this is a motherboard issue. Any other suggestions before I try to RMA it?

[Convictions]

48 minutes ago, icicleCrash said:

I'm thinking this is a motherboard issue. Any other suggestions before I try to RMA it?

Did you try re-seating the GPU and making sure all cables (including power) are firmly plugged into it?

[icicleCrash]

3 minutes ago, Convictions said:

Did you try re-seating the GPU and making sure all cables (including power) are firmly plugged into it?

Yup, I've tried reseating multiple times to no avail. All of the cables are firmly attached.

[Convictions]

Is there a different GPU you can try, or can you try your GPU in a different system? At this point I think it's hard to say whether the issue is a bad GPU or a bad mobo. 

 

EDIT:

 

Nvm, you covered that in the OP. Yeah, RMA the mobo seems like a decent idea.

[GregGoodenough]

DId you manage to fix it? I have smth similar, but my gpu works only with silent bios but not with OC bios.