Windows Vista has upgraded from the hibernation and sleep modes supported by the Windows operating system and introduced the “Hybrid Sleep” mode. This mode combines the best of both the sleep and hibernate features. It allows the PC to not only go into the Standby mode to save electricity and conserve power but also enables the recovery of your unsaved data and other opened programs. So if you are tired of losing out on unsaved data after a power outage while the computer is in Sleep state, try the Hybrid Sleep mode, wherein a hibernation file is created and saved on the hard drive. Tapping the keyboard or moving the mouse enables the computer to load the hibernation file and you can soon resume work. Here is a step by step guide on how to enable hybrid sleep in Microsoft Windows Vista.

Step 1: Click the Start button on your screen and select the “Control Panel” option

Step 2: Select the “System and Maintenance” option and click on the “Power Options”.

Step 3: The applet runs a number of options. On the “Select a power plan” page, and “Preferred plans” section, you need to change the power settings.

Step 4: Select the option of “Change advanced power settings” on the “change the power settings” page. This redirects you to “Advanced settings” page wherein you need to select the power options. Click on the expand button displayed next to the “Sleep” option and then expand the option for “Allow hybrid sleep” subtree. Based on whether you are using Vista on desktop or a notebook, your options would differ. For a desktop select “On” from the drop-down list while for a notebook, select “On” for both “On battery” and “Plugged in” selections displayed under the settings option. Click the “Ok” button and save the changes.


  1. Windows 7 has only “System” and “Power options” on the Control Panel. There is no “System and Maintenance” entry. I Cannot find any “Allow hybrid sleep” subtree under Sleep options (Windows 7)!! My computer SOMETIMES fails to wake up from sleep / standby status and the only thing I can do is press RESET on the case and lose unsaved data in the process. Hibernate works OK.