Fix: Allow the computer to turn off this device to save power is grayed out


  1. You are giving wrong advice. If it’s greyed out, it’s done for a reason such as when the port to which such a device is attached or the device itself doesn’t support correctly suspending or resuming from sleep. Enabling it via the registry can lead to problems with entering or resuming from sleep/hibernation.

  2. The “DeviceNumber” mentioned in that support thread is to be substituted with 0000 or 0001 or whatever the actual device number is. Creating a key actually named “DeviceNumber” isn’t going to do anything. And it only applies to devices that have the PnPCapabilities registry key such as network adapters. Adding it to device classes that don’t have PnPCapabilities will do nothing.

  3. Doesn’t work on XP. However System information shows mouse unable to save power. I don’t know why perhaps problems occurr on the motherboard.

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