I bought a new graphic card (XFX R9 270x) and the problem is screen flickering when browsing the web or watching some videos.
The problem was the drivers because when I uninstalled the Catalyst Control Center and the drivers, the problem was gone.
I thought that maybe older drivers would work... So I uninstalled them completely in safe mode using Guru3D tool.
I installed the oldest drivers that can detect my graphic card, which is version 13.12.
But still, the problem is there!
I have this log of the drivers crashing :
"Le pilote d’affichage amdkmdap ne répondait plus." which means "The display driver amdkmdap didn't respond."
My PSU is Cooler Master 750w GX.
My motherboard ASRock B87 Anniversary BIOS is the latest version.
My graphic card XFX R9 270x BIOS is the latest version.
Example video of the problem (not my video): R9 270x Screen Flickering - YouTube
I don't know what to do anymore, so please help me.