What is Intel rapid start technology and how can i enable it?
Intel Rapid Start Technology is a hybrid sleep mode that allows a very quick resume. Once configured it is activated by sending your computer into a sleep mode (S3 state), which triggers a process that saves your computer's state, much like hibernation. Once the process is complete the computer is effectively powered off, however powering the computer on will result in a process returning the computer to the sleep state very quickly, and then resuming from that sleep state returning you to wherever you were when you sent the computer to sleep.
Before altering your computer's configuration in any way, please read the Intel user manual for Rapid Start Technology, which can be found at http://download.intel.com/support/motherboards/desktop/sb/rapid_start_technology_user_guide.pdf
The Intel download page for their Rapid Start Technology service and user interface for a number of desktop motherboards can be found at https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=21612
Make sure to check that your hardware matches one of the items on that list before downloading, and take the steps indicated in the user's manual before installing.