Something like that happened to me a while ago. I was very pissed off and my PC froze. Or did that happen the other way round?
This reminds me of when things used ot brake in the house. My dad would jsut have to attepmt to use it to make it work again. It's a shame he can't get my alarm to work. I've had quite a few alarm clocks and the alarm aways eventually doesn't work. The alarm was turned off, it just didn't go off and some times my alarm has even been turned off at the wall or one of the cables had been pulled out. I was even sure that I was awake once when this happened.

Now my watch is starting to brake too becuase the time keeps changing on it. Though it could be me changing it accidentally because once the knob was pulled out.