Windows Error messages - how funny they can get?

Windows has been one of the widest used operating system. Not to forget it is also one of the most hated Operating system as well. We come across many anecdotes that make fun of the most popular OS from Microsoft from time to time.

The error messages that Windows throws at you can be quite hilarious at times. Can our members come up with the most funny error message they came across while using Windows operating system?
I would welcome our techians adding their own bit of sense of humour in analysing those error messages.