Just kidding

0cc

Not enough disk space for system dump, using serial port instead

0h8

Machine is angry with you

100

Not enough money invested in system, please insert $100 to continue

200

You lost your key, didn't you?

666

Connection from Windows machine denied

888

And I bet you lost your manuals as well

bad

Machine defective, buy a new one

c56

Running user-defined corruption

f13

Date is Friday the 13th