Videos?
Have you recorded with a device like fraps, or something else?
If you've done that, you'd want to search for the folder of the recording device that you used.
It should be in the video's file of that, OR if you press your windows button, and then select computer, and then go down to videos.
It should be there, I don't really know this is a brief description/explanation I could give, I'm not really a tech-savvy wizard.
I hope I helped some.