Odd computer crash

Just come back in to find the laptop waiting at the login screen rather than asleep. It's recovered from a "Blue Screen". Odd thing was we had a power blip earlier this morning and for whatever reason the local DNS wasn't working, in that I could still ping the local computers by IP address but not by identity. Turning the network on and off did nothing nor did flushing the DNS cache.

Now it's working. Odd that Event Viewer shows nothing untoward.