Setting screen display to hibernate or sleep.

Dear Priscilla Herington,

Thank you for reaching out and providing the details of the issue you're experiencing with your laptop screen not going into sleep or hibernate mode.

It seems you're encountering a problem where your screen remains on with full brightness, despite setting it to sleep or hibernate after inactivity. This can sometimes occur due to various power settings or system configurations.

Let's go through a few steps to help resolve this issue:

1. Modify the Registry (Advanced Step)

To ensure that your sleep and hibernate settings are functioning properly, we can modify a registry key related to power settings.

Warning: Be careful when editing the registry. Back up your registry by selecting File > Export in the Registry Editor.

• Open Registry Editor by pressing Win + R, typing regedit, and pressing Enter.
• Navigate to the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\238C9FA8-0AAD-41ED-83F4-97BE242C8F20\25DFA149-5DD1-4736-B5AB-E8A37B5B8187
• Find the Attributes value and set it from 1 to 2.
• Restart your PC for the changes to take effect.

This change helps enable more control over certain power settings that may be causing issues with sleep or hibernate modes.

2. Disable Fast Startup

Fast startup can sometimes interfere with power settings. You can try disabling it:

• Open Control Panel by pressing Win + R, typing control, and pressing Enter.
• Navigate to System and Security > Power Options.
• Click Choose what the power buttons do on the left panel.
• Click Change settings that are currently unavailable.
• Uncheck Turn on fast startup (recommended).
• Save the changes and restart your computer.

3. Perform a Clean Boot

Performing a clean boot helps rule out any third-party software or services that may be interfering with your power settings:

• Press Win + R, type msconfig, and press Enter.
• In the System Configuration window, go to the Services tab and check Hide all Microsoft services.
• Click Disable all to disable non-Microsoft services.
• Go to the Startup tab and click Open Task Manager.
• In Task Manager, disable all startup items.
• Restart your computer and check if the sleep and hibernate settings are working properly.

Disclaimer: A “clean boot” starts Windows with a minimal set of drivers and startup programs. It helps to determine whether a background service is interfering with your game or program and to isolate the cause of a problem. 
These steps of "clean boot" might look complicated at first glance. However, to avoid any trouble for you, please follow them in order and step-by step so that it will help you get back on track.

4. Adjust Power Plan Settings

We can fine-tune your power plan settings to make sure they are correctly configured for sleep and hibernate:

• Press Win + R, type control, and press Enter.
• Go to System and Security > Power Options.
• Click Change plan settings next to your selected power plan (e.g., Balanced).
• Click Change advanced power settings.
• In the Power Options dialog:
  • Expand Sleep and make sure Allow away mode policy is set to No.
  • Ensure Sleep after and Hibernate after are set to appropriate times (e.g., 10 minutes or whatever time works for you).
  • Expand Display and ensure Turn off display after is set correctly (e.g., 5 minutes or your preferred time).

If the above steps don’t resolve the issue, it would be helpful to gather the following additional information to further troubleshoot:

1. Laptop model number
2. A screenshot of the output from running the powercfg /requests command.

• Press Win + R, type cmd, and press Ctrl + Shift + Enter to run Command Prompt as an administrator.
• In the Command Prompt window, type the following command: powercfg /requests
• Press Enter and review the output for any processes that are preventing sleep or hibernate.

Please follow the steps above and let me know if the issue persists or if you need any further assistance.

Best Regards,

Martin | Microsoft Community Support Specialist