Will my computer remember all of its data, if I turn it off at the powerpoint?

I'm getting ready for Earth Hour tonight, and i want to turn my computer off - powerpoint and all. But will it forget everything? all of my photos, documents, everything?


I'm just abit paranoid...



just save your files before shutting down..





Hard drives can hold information without power, so all your files are safe.




Save everything then shut it off however you want