Black Screen after Apple Logo

This is my first time installing hackintosh.

My Desktop Spec:

i7 4790k CPU

24GB RAM

Asus Z97-A motherboard

ATI Radeon HD 5670

Samsung SSD 850 EVO 250GB

High Sierra installation went smoothly and the monitor is connected to my dedicated ATI Radeon HD 5670 card.

Once installation has been completed, it show Apple Logo (while booting) and then Black screen without any text.

I did a lot of googling and I have no luck to get this problem fixed.

InjectATI is enabled via Clover.

I tried different bootflags:

GraphicsEnabler=No

GraphicsEnabler=Yes

GraphicsEnabler=No ATIConfig=Eulemur

GraphicsEnabler=Yes ATIConfig=Eulemur

See Images:

https://i.imgur.com/ck7TZQT.jpg

https://i.imgur.com/7nITnms.jpg

https://i.imgur.com/aZSqXWD.jpg

What to do?