Hibernate

A computer feature that many people do not use, which allows the computer to to shut down while playing music, games videos, browsing, and running antivirus scans all at the same time. When the computer turns on again, all tasks resume at where they were as if nothing happened. Despite how awesome that is, most people still close down all their programs and shut down, only to have to start them up again when rebooting. The idea behind it is simple. Take pretty much everything on the RAM and copy it to C:\hiberfil.sys, which is read again when the system resumes.