If you experience an issue with your Windows device going to sleep after 1/2 minutes even though you have changed the sleep settings to a longer timeout use the following steps to enable the “hidden” system unattended sleep timeout settings.
I have had issues with Windows going to sleep irrespective of what time limits are set in the Windows settings. These “hidden” timeout settings have often been the cause.
- Open the Registry Editor by clicking the Windows key + R key on your keyboard
- Type in regedit and press ok

- Once the Registry Editor opens navigate too
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\238C9FA8-0AAD-41ED-83F4-97BE242C8F20\7bc4a2f9-d8fc-4469-b07b-33eb785aaca0 - Double Click on the Attribute key and change the value to 2
- Click Ok
- Open the Windows Power Options (press the Windows + R key on your keyboard and type in powercfg.cpl and click Ok). You can also open the power options from the control panel

- Once the Power Options window opens find activated power plan(will be in bold) and click on Change Plan Settings
- Once the plan opens click on Change Advanced Power Settings

- The Advance Power Options will now open
- Scroll down to Sleep and check the System Unattended Sleep Timeout settings. Change the time out setting to the desired time limit and click Ok.

this works very well – thanks for the procedure, you have removed one of life’s little annoyances!