ISSUE SOLVED!
So I recently bought a Sapphire Rx 480 OC Graphics card, though the installation of this wasn't easy as usual.
I tried to install latest drivers from AMD website ( version 16.10.1) though it didn't work since it only offered me 'AMD install manager' and the AMD Catalyst software did no good.
But here's the real issue, every time when I boot and the 8 (6+2) pin PCE-I connector is plugged in the graphics card,
my monitor (LG 23MP68 VQ) won't display anything even if the connection is from the motherboard it won't display anything.
My connection is via HDMI. But if you remove the connection of the 8 pin and boot the pc again, the monitor would detect and display.
Please help. I've already tried using Display Driver Uninstaller (DDU) and removed everything but the display from the graphics card couldn't be detected by the monitor.
On a side note, it used to work before already from the graphics card though it would show the boot menu or the splash screen from the motherboard.
So I'm sure the graphics card also works. But for some reason my pc just started to have a problem with displays. Help.
Here are the specifications of my PC:
Motherboard: Gigabyte GA Z170 XP SLI
OS: Windows 10 64bit (Enterprise 1607 version)
GPU: Sapphire Rx 480 OC
CPU: Intel i6700K (clocked at 4.5 GHz)
Ram: GSkill Ripjaws 8GB
PSU: Seasonic S12II 620W
Thank you for reading this far! I hope I can be helped T.T