I experienced something very similar to that a few years ago.
Turned the Gas on in the oven.
Ran to answer a knock on the front door.
Had a long discussion.
Returned, and lit the Gas.
F.....
....!
Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.