Okay replaced it, all works good now. GPU got fired.Yeah, just turn the system off, unplug the system, and then you're good to replace the GPU.
If you wondering if the new GPU will be safe I would say it should be. A power surge can damage components, but a damaged motherboard shouldn't damage a gpu on its own.
I had to bet money I would say it is your mobo that is dead.
Okay replaced it, all works good now. GPU got fired.