Have you discovered that the hibernate option is missing on your system? Don't panic here is a way to solve that problem, just follow along. There are many ways to achieve this but one of the easiest is just to run a simple command at the command prompt.

Check Disk [chkdsk] is a command you run from the command line or through other utilities to check for errors on your hard drive. Check Disk examines disks and can correct many types of common errors on FAT16, FAT32 and NTFS drives.