I've been having the same problem with every computer I've ever had. Every single one of them (about 5 in the past 3 - 5 years) eventually had a black screen every time I tried to turn it on.
I'm aware some of them were for different reasons, since the newest one did it but we fixed it by using this special diagnostic technique or something (I don't remember what it was exactly) but it came up on the opening screen. To see the opening screen without it just going black as soon as we turned it on, we took out this antivirus disk that was inside it.
I found that a bit strange because that disk has been in the computer since we got it (about 8 months ago).
My parents thought it must've been me downloading viruses on accident throughout the past years, but they also thought it could've been Facebook.
Many people have tried to hack Facebook and got to people's computers through Facebook. I've had my Facebook for as long as I have the computers that broke.
Please help, I'd like to know exactly or at least what might have caused my computers to only show a black screen when booted up.

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