Never a good thing to see when you start your computer. Interestingly enough – this used to almost ALWAYS mean your hard drive had failed. Nowadays with virus infections getting much deeper into systems, we've seen viruses cause an error like this and some disk repairs get a system booting again.

Fun
This is always fun to wake up to. What other awesome errors have you seen unexpectedly? This happened to me today btw. Good times.
Just fun pictures of stuff