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

In order to make efficient use of electrical power, your Windows system manages to turn off the devices which are not currently used. You can configure these settings from the Device Manager. Right-click over the device and select Properties.

Note 1 by Admin: The post has been edited. This Microsoft Community thread says one thing, but we are basing this post on this Microsoft post. Please read the full post and comments first.

Allow the computer to turn off this device to save power

In the Power Management tab, you have to enable Allow the computer to turn off this device to save power and Windows will turn off the device when not in use so that power will not be wasted. But what if the same option is grayed out:

Allow the computer to turn off this device to save power


One can see that you can’t adjust the mouse which is an external hardware device, to be turned off / on while not in use.

So how to change this settings? Well, a registry manipulation will help you to fix this. This fix is applicable to the devices supporting Plug-n-Play (PnP) capabilities. Here is how to do it.

Cannot Turn Off Mouse To Save Power In Device Manager

1. Open Device Manager, by pressing Windows Key + R key combination and inputting devmgmt.msc in the Run dialog box and hit Enter.

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2. In the Device Manager, expand the Mice and other pointing devices, right click on the device and select Properties for which you’re facing the issue.


3. Now in the Properties window, switch to Details tab, select the Property as Driver Key. Copy the key as shown below. The last portion after \ of the Value so copied is device number which is 0000 in our case – but if the option is grayed out you may see a value of 24.


4. Moving on, press Windows Key + R combination, type put Regedt32.exe in Run dialog box and hit Enter to open the Registry Editor.

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5. Navigate to the following location:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\Driver Key

Where you have to substitute Driver Key obtained in step 3.


6. In the right pane of this location, you’ve to look for the DWORD named PnPCapabilities. If the DWORD doesn’t exist, you can create it using right click -> New -> DWORD Value. Double click on the same DWORD to modify its Value data.


7. If the value is set at 24, that option gets grayed out. So in the above-shown box, you have input the Value data to 0 in order to allow the  computer to turn off the device while it is idle. You may now close the Registry Editor and reboot the machine to make changes effective.

That’s it!

Note 2 by Admin : We’ve updated the post with more details for the convenience of beginners. We also thank Anonymous, whose comments made a valuable contribution to better this post. So one can conclude that by default, a value of 0 indicates that power management of the network adapter is enabled. A value of 24 will prevent Windows from turning off the device or let the device wake the computer from standby. This Microsoft post also gives you the option to use a Fix It, so we recommend that you use the easy to use Fix It to enable or disable network adapter power management on a single computer.

Posted by on , in Category Windows with Tags
An Electrical Engineer by profession, Kapil is a Microsoft MVP and a Microsoft Content Creator. Please read the entire post & the comments first & create a system restore point before making any changes to your system.


  1. Anonymous

    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. ^^ It may be also possible that some third-party tool might have greyed out that option. No point of giving wrong advice, we’ve just referenced the solution provided by a Microsoft support engineer itself, mentioned here:

  3. Anonymous

    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.

  4. ^^ Re-updated the post, thanks for inputs 🙂

  5. James Rutland

    Are you sure it’s 24 and not 0?

  6. James Rutland

    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.

  7. ^^ Yep, its 24, which is required one. The default value is 0.

  8. ^^ It may be hardware problem then.

  9. James Rutland

    thanks for reply What is the method used on XP?

  10. Trudu

    well, this not working at least under W10x64 (RTM)

  11. Leo Kusuma

    Not working at W10Pro 1607. Still gray on option allow computer to turn of this device.

  12. Thanks. Verified and edited.

  13. j f

    This didn’t work for me any other suggestions

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