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HP PCs - Troubleshooting Sleep and Hibernate Issues (Windows 8)

This document applies to HP and Compaq desktop and notebook computers with Windows 8.
 note:
If you are not using the latest version of Windows 8, some graphics and information in this document may vary. You can get the latest version from the Microsoft Store.
The computer will not wake up from sleep or hibernate mode
Restarting your computer erases all information in the computer's memory, which may restore functionality. Before performing these steps, be sure to restart your computer to attempt to resolve the issue.
If you have a notebook computer that cannot return from sleep mode, first make sure it is connected to an AC power source and the power light is on.
The computer wakes from sleep mode unexpectedly
If your computer wakes from sleep mode unexpectedly, see the information in this section to prevent hardware devices from waking the computer.
The computer will not go into sleep or hibernate mode
If the computer will not go into sleep or hibernate modes, use the following steps in order to troubleshoot.
Disabling the password requirement when resuming from sleep
If you are required to enter a password when you log on to your computer, the default setting will be the same for when the computer is resuming from sleep/hibernate mode. Use the following instructions to eliminate the need to use a password when resuming from sleep.
Disabling hybrid sleep in Windows 8
The hybrid sleep setting might cause an issue with the sleep mode.
Use the following steps to disable hybrid sleep:
  1. Click Change plan settings for the power plan that is selected.
    Figure : Power Options window
    Power Options window
  2. Click Change advanced power settings.
    Figure : Notebook computers: Change advanced power settings selection in the Edit Plan Settings window
    Notebook computers: Change advanced power settings selection in the Edit Plan Settings window
    Figure : Desktop computers: Change advanced power settings selection in the Edit Plan Settings window
    Desktop computers: Change advanced power settings selection in the Edit Plan Settings window
  3. Navigate to the hybrid sleep settings by:
    Clicking the plus sign (+) next to Sleep,
    clicking the plus sign (+) next to Allow hybrid sleep,
    and selecting Off from the drop-down menu.
    Then click OK.
    Figure : Notebook computers: Allow hybrid sleep selection in the Power Options window
    Notebook computers: Allow hybrid sleep selection in the Power Options window
    Figure : Desktop computers: Allow hybrid sleep selection in the Power Options window
    Desktop computers: Allow hybrid sleep selection in the Power Options window
Understanding Windows 8 Sleep and Hibernate
Sleep: Pressing the Sleep key on the keyboard or clicking Sleep from the Windows 8 Shut down menu causes the computer to go into sleep mode. Closing the display panel on a notebook can also put the notebook in sleep mode. Sleep mode saves the state of all open applications to memory, then powers down both the display panel and hard disk drive. Only enough power is used to maintain the data in the memory. Restoring from sleep mode happens quickly, in most cases in a matter of seconds. Sleep mode is useful when you need to pause the computer for a short time. However, in a notebook, maintaining the power to the memory modules can drain a battery if the notebook is not plugged in.
Hibernate: Clicking Hibernate from the Windows 8 Shut down menu (if available) causes the computer to go into the hibernate mode. Hibernate saves the state of all open applications to the hard disk, then completely powers off the computer. The computer consumes no power while in hibernate mode. When you restart the computer, the previous state of all open applications is restored. Restarting from hibernate mode might take longer than restarting from sleep mode. Use hibernate when you do not need your computer for an extended period of time.

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