If you have an Nvidia graphic card then download and install Geforce experience. It's a free program offered by Nvidia which contains several features including optimising your games based on the performance of your gpu versus the game's requirements and Shadow Play a program that allows you to record and store videos of your games.
Here's the download link:
http://www.geforce.com/geforce-experience/downloadFor ATI video cards there's the equivalent, a free program called Raptr. Incidentally, Raptr is not ATI exclusive and can be used with Nvidia gpus as well but works better with ATI ones.It offers the same features and some more including community stuff where you can post and view vids, forum etc.
Here's the link:
http://raptr.com/Krabb: Links fixed.