Sounds like what may have happened is condensation.
It may have been cold outside but your laptop will have started to get hot, plus the hot vapour being blown onto your laptop (Cold by the temperature) may have caused condensation to happen to.
There is a chance that water droplets may have formed inside your laptop on the hardware causing undesired effects.
You may want to let your computer dry itself out in a dark/warm room for a day or two and see how it goes.
if it isn't condensation that's causing the issue then I would look at updating graphics drivers on your laptop.
Everyone knows that water and electricity don't mix.
I hope you have insurance!