Question Black Screen/No Display after switching bios with bios switch.


Aug 3, 2017
Hello, i need help
I have Vega 56 Sapphire nitro+ and i Flashed the 2nd bios switch with 64 bios,
today i wanted to revert back to the original bios, and my monitor just stand-by with not display at all.

What i did.
  1. Uninstalling the vega 64 driver with DDU.
  2. Turned off the PC.
  3. Switching the bios switch to the 56 bios.
  4. Turned on the PC.
  5. Keyboard, Mouse and other pheriperals turned on
  6. Debug led doesn't show any sign of problem.
  7. I can hear sound from Windows. (such as device connecting and disconnecting)
  8. Screen is not turned on (not black screen), its like my PC in sleep mode
  9. I waited for about 1 hour and nothing happen.
  10. I tried to reset CMOS and repeat all the things mentioned above.
  11. Unplug and reseat the GPU then repeat the process, still not working.
  12. Switch to the 64 bios and my PC boot up normally without any problem.
PC :
Ryzen 5 3500x
B450 Tomahawk Max (Already updated with latest bios)
2x8GB 3200mhz
Sapphire Vega 56 Nitro+
Super flower Leadex silver 550w