Question RX 570 won't post after undervolting?

[eel9790X]

Hello, I'm posting this thread on behalf of my friend whose blower-type RX570, after undervolting, won't post. He said it was fine at first and then the monitor seemingly disconnected from the gpu although the HDMI is still plugged in. It's worth noting that the card fans, on startup and in idle, was spinning. Now, it won't anymore. The fans at one point (after disconnecting) was spinning at it's max speed, but nothing happens, no display or anything. I assisted him and did the following:

- reseat the card
- switch PCI-E cables
- clear CMOS

Did the undervolting brick his card?

This is the card.

 

[helpstar]

how did you do the undervolting? did you flash a modified VBIOS to the GPU or just by using a tool in windows (eventually which tool)?

 

[eel9790X]

how did you do the undervolting? did you flash a modified VBIOS to the GPU or just by using a tool in windows (eventually which tool)?

He was using adrenalin I'm pretty sure, and no vbios modification was done. The drivers were just recently updated too

 

[eel9790X]

Edit: I changed the link above, I mistakenly put a 590. It should be showing a rx570 in gpuz

 

[helpstar]

boot to windows safe mode Enable low-resolution video (640×480)
https://support.microsoft.com/en-us...afe-mode-b90e7808-80b5-a291-d4b8-1a1af602b617
or e.g. with an windows image on USB (use Microsoft´s media ceation tool) and uninstall adrenalin, reboot and reinstall adrenalin drivers

 

[Imperat0r]

Or you can boot in safe mode, and use Display Driver Uninstaller - a software created to remove drivers and all traces from registries.
Just keep in mind when you are in safe mode and the computer announce you to restart computer - unplug your network cable from computer to prevent windows to install generic drivers from net.
Restart computer
Install your desired drivers and restart computer again.
Now you can plug back your network cable.