Record Your Screen - Windows
When you report bugs to us, sometimes a video is helpful to solve issues as fast as possible.
From http://www.howtogeek.com/ :
"Windows doesn’t include a built-in tool for creating desktop recordings. There are lots tools for doing this, but make sure you avoid the junkware bundled into their installers if you go hunting for them. You can actually use VLC to record your desktop, and that’s a convenient option. There’s a good chance you already have VLC installed, and it’s a Swiss army knife that will allow you to quickly record your desktop without installing anything else.
For more advanced screencasts, we recommend OBS (Open Broadcaster Software). It’s very powerful, free, open-source tool that allows you to do more. Insert watermarks, embed a video of your webcam while capturing your desktop, choose specific desktop windows, and so on.OBS is widely used for video-game-streaming on Twitch.tv because it’s so powerful, but it works just as well for creating a professional-looking video of your desktop.
If you want something even more powerful that also comes with editing capabilities, you can pay for Camtasia, the best software on the market — but be warned, it’s not cheap. Luckily they do have a free trial, so you can test it before you buy."