Before installing the AMD Adrenalin 2020 20.2.2 I had no problems at all.
PC started to randomly crash after booting up without being in any game or so.
So I fresh installed the OS and the PC used the Windows preinstalled Display Driver for about a week and it worked just fine.
Today I fresh installed the AMD Adrenalin 2020 20.2.2 again and the problems described above started to occur again.
The monitor goes off and it doesn't detect any input, the keyboard and the mouse also loses power (lights goes off.)
The fans are still working inside the case. (There's still power).
I've uninstalled the Adrenalin 2020 and Installed the display drivers via Device Manager and it seems to be working for now.
Radeon Settings Version 2018.0303.2240.40774
Driver Packaging Version 17.40.3735-180303a-326099C-RadeonSoftwareAdrenalin
Motherboard: ASUS M5A78L-M/USB3
CPU: AMD FX-8370 Eight-Core Processor
GPU: SAPPHIRE NITRO+ Radeon RX 580 8GB GDDR5
RAM: 2x HyperX Savage Red 8GB 1600 CL9 DDR3
OS: Windows 10 Pro 1909
BIOS Version: 2101