GPU stopped working and now it gives a bunch of artifacts

[Darthenn]

Hello,

I own a gigabyte gtx 770 windforce oc.
I recently received BSOD so I just restarted the system and afterwards the system run in 800x600 resolution with a bunch of red strip artifacts and 43 error of GPU.
After restarting it keeps giving the same issues.

I uninstalled the drivers with display driver uninstaller in safe mode. While trying to install the newest drivers the device keeps restarting and the screen is flashing with different artifacts, now grayscale covering the whole screen and the installation of driver is not successful.

I tried changing the slot, putting in and out the power cable. Nothing changes.

While installing drivers in safe mode is succesful and in safe mode I am able to change the resolution and it doesn't show any artifacts then in normal windows launch after the driver installation it works the same with artifacts and default 800x600 resolution.

Is my GPU dead? I didn't have anything on when I had the bsod. It was not overheating, because the gpu was not hot when I touched it after I noticed the artifact. It was never overclocked, it had decent airflow and I cleaned it from dust yesterday.

Thanks for any kind of help

I am greatful for you time and answers

Best regards