Siri, on the bottom of your Gateway laptop, you'll find the hard drive door to access the hard drive. Here you should be able to either pull the hard drive out with the caddy. It may be using some screws that hold it in place. Once you remove the HDD cover you will see how it is fastened. It is actually a pretty straight forward task, and should be very similar [https://support.gateway.com/s/Mobile/Gateway/4536GZ/4201faq24.shtml|to this one.] Hope this helps, good luck.