I was solo mining this and accidentally the entire blockchain.
Is this dangerous?
Pls respond.
you accidentally what
The entire blockchain.
My GPU isn't working anymore now and I don't know what to do

What happened? I had the same problem. My Gpus fucked up and the screen was flickering and turning black even after restarting it. After 40 minutes it started working again. It's very scary, because it's a lot of money lost if damaged.
I had Vertminer going and it seemed to be working, found a few blocks but then suddenly the screen went funny and when it came back on the entire blockchain had accidentally. My PC keeps shutting down now, it won't even boot up any more. It better not be permanently damaged, the entire rig was worth over 9000 dollars.
What do you mean with : "and when it came back on the entire blockchain had accidentally." ??