Hi,
Fast Startup was first introduced in Windows 8. This mode is available to start a computer in less time than is typically required for a traditional cold startup. In Windows 7, if you'd like to enable or disable Quick Boot, you may need to configure your BIOS settings. To get the best possible assistance in configuring BIOS in order to turn off Quick Boot, we recommend reaching out to your computer manufacturer.
You may also want to see this article: Ways to improve your computer's performance.
Let us know if you need further assistance.