GPU causing graphic errors on start up and crashes

Recently I have encountered a windows error called watchdog violation, I have changed my sata drivers, done a full hard drive check through CMD and turned off windows quick start.
I don't know if the above has anything to do with what I am now encountering as they pretty much happened at the same time, I have removed the graphics card after seeing green dots appear on my monitor as well as distortion, can anyone help me fix my graphics card or do you think it is beyond help ?
 
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