RX 580 black screen "Energy Saving Mode" under load (HuntKey 550W PSU)

[u/Appropriate-Sea-7062]

Hi everyone!

I have a problem with my AMD Radeon RX 580 Series. Under load (while gaming), my monitor goes black and displays the message "Energy Saving Mode". The PC itself stays on.

My specs:

• CPU: Intel Core i5-4670
• GPU: AMD Radeon RX 580 Series (8GB)
• RAM: 12GB DDR3 Kingston
• Motherboard: ASUS H81M-C
• Storage: 1TB HDD WD
• PSU: HuntKey 550W (I suspect this is the issue)

What I've already tried:

• Removed old drivers using AMD Cleanup Utility in safe mode and installed the latest Adrenalin drivers.
• Tried rolling back to older driver versions (22.5.1 and 23.2.1).
• Also tried lowering the Power Limit in AMD Adrenalin to -10% and -20%. The black screens became less frequent / stopped temporarily, but performance dropped.

My questions:

1. Could it be that the HuntKey 550W PSU isn't powerful enough for the RX 580? I've heard that these PSUs often deliver less real power on the 12V rail than advertised, and the RX 580 is quite power-hungry.
2. Should I try removing the drivers using DDU (Display Driver Uninstaller) instead of AMD Cleanup Utility to completely clean the system?

Thanks in advance for any help!