*Resolved* New build issues - 3900x / X570-f ASUS, no POST, no BIOS

[TommyV]

Hello, having issues getting it to POST;

Components (New)
- 3900X
- X570-F Gaming Asus ROG Strix
- Corsair Vengeance 32gb (2x16gb) 3600mhz

Components (Existing, working perfectly with old build moments before starting the upgrade)
- 1080
- M2 256gb
- 650W PSU Bitfenix

Symptoms
- Everything switches on
- Screen goes black, it's receiving something
- No POST, unable to get to BIOS
- Does absolutely nothing what so ever but hangs with eventual persistent white and yellow mobo lights

Troubleshooting
- Removed GPU, DP plugged into the mobo DP port
- Removed 1x stick of RAM, have tried all 4 slots
- Re-seated CPU, there are zero bent pins, checked before original + re-seating
- Removed all HDD's

Is anyone able to throw some suggestions my way? This is my first dive into an AMD build since the days of Athlon XP, it's going great I don't have access to alternative AM4 CPU's, or X570 Mobos

Only thing I can thing is the 8 + 4 pin CPU connectors on the top right, I only have access to a single 8 pin on my PSU, but the manual says it should be fine with only this.

 

[mickyflinn]

Can you clarify everything switches on cpu fan runs? Power led light on motherboard.

 

[TommyV]

Thanks for the reply Micky, appreciate your time.

After closer inspection on the mobo, the lights represented either VGA/RAM/CPU, the white light was VGA, after re-seating the 1080 again everything suddenly sprung into life. As easy as that.

Feel like I got off lightly this time *touches wood*

 

[mickyflinn]

Glad you sorted it, what cooler did you get for the 3900x ?

 

[TommyV]

Glad you sorted it, what cooler did you get for the 3900x ?

I've used the existing coolermaster M240L from the previous 4790k. Seems to be doing the job, but not convinced it'll be up to par when I start throwing games other than WoW/Valorant at it, time will tell