AMD R9 390X2 crossfire black screen issue

Yeeeaaaah IT WORKS!

here is what i did ↓
Open HWiNFO and close summary and sensor
Go to Program>Settings
Go to Driver Management tab then disable Persistent Driver and remove driver. DON'T CLICK REMOVE AGAIN if you already clicked once.
close HWiNFO then enable crossfire.
Oh yes - when HWiNFO is running, you cannot properly remove the driver. You need to either close it, or do the operation from within the Welcome screen (before the main scan is started).