When I was young, I played Zelda OOT. When I arrived at Dodongo's Cavern, I couldn't progress because the music freaked me out so much I always left the dungeon after minutes in it. I stopped playing for a few months before realizing I could just mute the TV... And that's how I beat the dungeon.
What was the first video game that scared you?
It doesn't have to be a horror game. Maybe you didn't even play it -- plenty of ads freaked me out as a kid.