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Source: Microsoft Support
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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 How to back up and restore the registry in Windows
Before Windows Vista SP2, in order to wake a computer by using a Bluetooth HID device, an end-user had to use a special Bluetooth dongle, and it only was included with the keyboard, mouse, or desktop set. In Windows Vista SP2, more Bluetooth controllers can be used with a Bluetooth HID device to wake the computer. However, the success in waking the computer depends on the hardware configuration. If the Bluetooth radio has enough power to receive the HID’s connection request, and the Bluetooth controller supports wake from the computers sleep state, then the system will wake.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
To enable Windows’ Bluetooth HID wake function, follow these steps:
1. Click Start, and in the Start Search box type regedit.
2. In the Programs list, right-click regedit.exe and click Run as Administrator.
Note: If you are prompted for an administrator password or confirmation, type the password or click Continue.
3. Browse to and then click the following registry subkey:
13. Right-click RemoteWakeEnabled and click Modify.
14. Enter the value 1 for Value Data and click OK.
15. Close the registry editor and restart your computer.
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