Graphics not working or green artifacts displayed

[Goofy_]

Hi,
my problem is kinda strange. Recently out of blue, my PC stopped working normally.
On my graphics that are connected to PCI Express windows stops booting right after windows logo.
When I switched to my integrated intel card it did boot but displayed green artifacts over everything

that is darker color.

I've noticed that if my drivers are unistalled and graphic card was working on basic 800x600 it behave

similar to integrated intel card. As soon as I've installed drivers and restarted the system it went

black.

This issue is only visible under OS. During boot or in UEFI everyhing works fine and no artifacts are

displayed

So far I tried:
- checking temp - everything seems fine
- checking voltage in bios - differences are in 0.01
- switched system from win 10 to win 7
- installing older drivers
- checking output with and without graphics in PCIE and checking with integrated card disabled.
- Checked on second monitor but I does have only VGA port so checking graphic card was not an option.

My specs are:
Motherbord: Killer e2200
Processor: Intel i5 -4670k
Memory: 4x4gb memory
Graphics: Radeon R9 240
Power supply: Corsair rm750

Anyone have a clue what I should check? I do not have any spare parts.

 

[Ramlethal]

Artifacts only appear when the graphic card has been severally damaged due to an excesive Overclock OR excesive heat. Probably you fried your card earlier or try to Overclock it a little bit far from its limits and you ended up damaging the card. Unfortunally there is no actual fix to this other than just dumping the card and purchasing another one. Btw, Radeon cards runs extremly hot and tends to have less tolerance on heat.