Here are some funny windows error message jokes:

# Smash forehead on keyboard to continue.
# Enter any 11-digit prime number to continue.
# Press any key to continue or any other key to quit.
# Press any key… no, no, no, NOT THAT ONE!
# Press Ctrl-Alt-Del now for IQ test.
# Close your eyes and press escape three times.
# Bad command or file name! Go stand in the corner.
# This will end your Windows session. Do you want to play another game?