My GPU is working fine when using the above version of Radeon Software. But I cannot use MSI's Gaming App because it requires to have the latest version.
So I downloaded the new version ( Adrenalin Edition 18.5.1 ) from Radeon site. The problem starts after updating the software ( and possibly the GPU driver too ).
After updating, my PC still works fine but once I shut it down or restart it, the display will become blank/black after windows loads.