GPU Mining Help

new to mining and I have setup everything by watching YouTube, everything works fine but suddenly after continuous mining for 2 3 days display starts flickering, mouse keyboard doesn’t work, then when I shut down manually and try to restart again, everything turns on but no display comes up. Any help would be appreciated.

Need more info. What are you mining with? Did you modify anything? What software are you using? Be REALLY specific.
It sounds like you overclocked or did something.

A quick screen shot would do wonders for figuring this out. Welcome aboard man hope your crypto journey is a profitable one.