"Your Pc ran in problem" after fixing black screen error .

This is my second time trying avast :-[
And this time I installed it and did these steps
In the video to fix black screen
Www.youtube.com/watch?v=_PGvpwahhTY

And now computer won’t even get started …
It load up and then show "pc ran into a problem and it collect data and restart and ask to restore …
And when I said yes to restore it won’t do sh*t …

I regret Installing avast …

I used avast when I was 10
Years old on my Windows’s xp computer .

And windows 7 . Then vista . Had really good experience .
But now … Sad customer .