ATM: ‘Welcome’. Card in. PIN typed in. Oops, instant BLANK SCREEN. Keypad doing nuttin’. Hmmm.

Looking, looking, then up came the NCR logo white on black. For a loooooong time.

‘Have I broken it? I muttered. I went into the bank and explained my plight.
A teller went and had a look: ‘Oh it’s just re-booting, it won’t be long.’
Um, OK. Re-booting?
Waiting, waiting — held hostage because my card was in the machine. Then, to my surprise, look what I saw:

We apologize for the inconvenience but Windows did not start successfully. A recent hardware or software change might have caused this. ...

Windows! Er, not my skill set.

I went into the bank again and said, ‘Hey, look, I know people who use Windows… I haven’t got that sort of time to waste. Can you open the little hatch and get my card for me?’
Sure thing.
I walked away, leaving the bank to get their machine working again. Maybe. Good luck with that. NMP (Not my problem.)

Life’s too short to wait for a computer, eh? (Did you know those things ran Windows? I didn’t.)

See comments for more examples. Add yours, if you want.