turn on hibernation in windows xp

normally hibernation is active and you can find hibernation tab in power option (in control panel) in there you can enable and disable this feature, but the tab only appears if the hibernation facility is enabled.you can turn on or turn off this feature using following commands.

• first go to the command prompt
• to turn on hibernation type this command powercfg.exe /H ON and press enter
  
• to turn off hibernation use this command powercfg.exe /H OFF and press enter