System Restore regularly tracks changes to your computer's system files and uses a feature called system protection to create restore points. System protection is turned on by default on the hard disk that Windows is installed on. You can turn on System Restore for other disks by turning on system protection for those disks. To learn more about how System Restore works, see What is System Restore?

The best way to delete hiberfil.sys or disable hibernate:

Go to Start menu, type “cmd” open up command prompt
Type “powercfg.exe -h off” [make sure you are an Administrator]
ENTER
Type “exit”
ENTER

If you give your email address to everyone, you are bound to receive spam emails, and you won't know where they came from. Wouldn't it be convenient to give a different email address to every business or web site, while getting all your email as before? Wouldn't it be easiest to assume the address will be given to spammers, and have it work as a spam blocker by shutting off automatically unless you decide otherwise?