Error jokes

I knocked on Stephen Hawking's door, but nobody answered...

All I got was "error 404 page not found."

Why did he die?

Because God made a mistake and pressed Ctrl+Z.

What did Stephen Hawking's computer say when he died?

"ERROR"

He's not really dead, his update failed.

I heard the man who invented Autocorrect died; may he rest in peace.

Did you hear about the man who was accidentally buried alive? -- It was a grave mistake.