I bought a used AIO PC for my daughter. At first it didn't even turn on, the power jack was extremely flaky, and there was a persistent blinking green line on the bottom of the screen. I have arranged for a return.

Today, all the issues are completely gone. I can wiggle the jack all I want and it's fine. Green line gone. I don't understand at all.

It's still covered by 1y warranty so I won't send it back now (it was cheap and it's good, I want to keep it).

I've turned into a #bugrepellent