I tried Xbox game recorder screen capture but it is useless for Windows software because when a popup window appears it does not get recorded because you can only record one window.

Yes a version control system is good but also you can use AJC Active Backup for peace of mind while you are working. This backs up into very compact archives (that only store the changes) every time you save a change to your work allowing you to go back to any version and see what you have changed. This protects you from mistakes and file corruption. It works very well on its own and also when you use version control because you can go back to any edit rather than just the last check in. It effectively is version control for your hard drive. There is now a Visual Studio add in to make it even easier to use. These days I would not program without it: http://www.ajcsoft.com/active-backup.htm[^]