1. Aug 12, 2020 In Windows 10 and Windows 8, assuming you're using a keyboard or mouse, the fastest way is through the Power User Menu—just press the WIN (Windows) key and the X key together. In some versions of Windows 10, you may also be able to open Device Manager directly from the Start menu, as a submenu under Control Panel.
2. I wish change power management (disable sleep mode) of LAN network adapter (via device manager), but tab 'power managenent' missing. On some PC's is this tab visible, on some PC's is missing. System is Windows 10 (1709), user with local admin rights. I suspect this is related to something that was set up when creating an installation image, but.

Just like our smartphones, we always keep an eye on our laptop’s remaining battery power percentage. So that, we can connect it to the power supply if the battery percentage gets too low. Many Windows 10 users are unable to see their laptop’s remaining battery power percentage, which is a very annoying issue.

A number of Windows 10 users have reported that they are unable to find the battery icon on the taskbar. In most of the cases, this issue emerged after upgrading to Windows 10 from Windows 8/8.1 or Windows 7.

Device Manager Power Management Tab Missing Windows 10 Desktop To disable this setting in Device Manager, expand Network Adapters, right-click the adapter, click Properties, click the Power Management tab, and then clear the Allow the computer to turn off this device to save power check box. In the Device Manager, select the menu item View / Show hidden devices. Now you can see the devices which are no longer connected to your computer. Delete the devices you are no longer using: Select the device you need to delete. In the dialogue box of the device properties go to the Driver tab and click Uninstall. Then follow the directions.

If you are also a victim of this error in Windows 10, there is nothing to worry anymore. We will

help you fix this problem using our methods. Simply follow and perform the methods, until the issue is fixed.

Windows 10 Power Management Tab

This annoying error can be solved using a number of methods. Perform these methods to get rid of this error.

1. Turn On Power Icon

In the first method, you will have to make sure that the show Power Icon option is turned On. Here’s how to do it.

Step 1. Right-click on your Taskbar, on a blank area. Select TaskbarSettings.

Step 2. Scroll down to locate Notification area. Under it, click on Turn system icons on or off.

Step 3. Here, look for Power. Make sure it’s turned to On.

Step 4. Now, go back to Taskbar Settings and click on Select which icons appear on the taskbar. It will be located under Notification area.

Step 5. Here as well, locate Power and make sure it’s turned to On.

Check if this solution has fixed the issue for you, or not. If the problem still persists, follow the next method.

★User Submitted Method

Device Manager Power Tab

1 – Right-click Start menu button.

2 – Select Device Manager.

3 – Expand battery.

4 – Right-click Microsoft AC Adapter.

5 – Select Uninstall device.

6 – Click Scan for hardware changes.

7 – Right-click Microsoft ACPI-Compliant Control Method Battery.

8 – Select Uninstall Device.

9 – Click Scan for hardware changes.

10 – Restart computer.

This method should fix the issue. If it didn’t, follow the next method.

2. Uninstall Microsoft AC Adapter and Microsoft ACPI–Compliant Control Method Battery

As most of the issues in Windows 10 are caused by faulty or corrupt drivers, this could be the reason behind this issue as well. In this method, we will uninstall the Microsoft AC Adapter and Microsoft ACPI–Compliant Control Method Battery drivers. So that, their drivers can rollback to default ones. Here’s how to perform this method.

Step 1. Right-click on the Start menu button and select Device Manager.

Step 2. Expand Batteries and right-click on Microsoft AC Adapter. Select Uninstall device. Click on Uninstall when asked for confirmation.

Step 3. Click on Scan for hardware changes and wait for Windows to reinstall Microsoft AC Adapter drivers.

Step 4. Now, right-click on Microsoft ACPI–Compliant Control Method Battery and select Uninstall device. Click on Uninstall when asked for confirmation.

Step 5. Again, click on Scan for hardware changes and wait for Windows to install Microsoft ACPI–Compliant Control Method Battery drivers.

Step 6. Restart your computer.

This should fix the issue. Check on the taskbar and make sure you see the battery icon. If the battery icon is still missing, perform the next method.

3. Run System File Checker Command

If none of the above-mentioned methods worked, then you need to run System File Checker. It is a troubleshooting tool which is designed to find and fix system related problems. It might fix your problem too. Here’s how to perform this method.

Step 1. Go to Cortana and type Command Prompt. Right-click on Command Prompt from results and select Run as administrator.

Step 2. In the Command Prompt window, enter the following command and press Enter.

sfc/ scannow

Step 3. Wait for the scan to finish. It could take up to 15 minutes.

Step 4. When the scanning process is done, restart your computer.

Check if this solution has solved the problem for you, or not. If you are still facing the same issue, try the next method.

4. Run Deployment Image Servicing and Management (DISM)

DISM or Deployment Image Servicing and Management is another troubleshooting tool, pretty similar to SFC scan. The difference is, DISM is a stronger tool than SFC. We will run DISM which will scan and fix the issue. Here’s how to perform this method.

Step 1. Go to Cortana and type Command Prompt. Right-click on Command Prompt from results and select Run as administrator.

Step 2. Type the following commands, one by one, in the Command Prompt window and press Enter after entering each command.

Step 3. The scan and fix process will take quite some time. Let it finish.

Step 4. When the process is done, restart your computer.

This method should have fixed your problem. If it didn’t work for you, perform the next method.

5. Run Windows Troubleshoot

Here, we will try to fix the issue using windows troubleshoot. In this method, Windows will try to solve the problem automatically by itself. Follow the steps to perform this method.

Step 1. Go to Cortana and type Troubleshoot. Select Troubleshoot from results.

Step 2. Click on Hardware and Devices.

Step 3. The Windows will check for issues. When done, click on Apply this Fix or ApplyRepair Automatically, whichever appears.

Step 4. Restart your computer.

This should fix the problem. If the issue still persists, perform the next method.

6. Install Important Updates

If none of the above-mentioned methods worked for you, maybe there is an important Windows Update pending, and installing it may fix the problem. Microsoft releases Windows updates regularly with fixes to many bugs and errors, and your problem’s fix might be in it. Go to Settings and check for updates. If there are any pending ones, download and install them. This will fix the problem.

We hope we were able to help you fix this issue using our methods. If you were able to solve the problem using some other method, or if you have any questions regarding this issue, please mention them below in comments.

When a device goes missing from the Device Manager, it means that either the BIOS or the operating system is not enumerating the device for some reason. Check for another device in Device Manager that may be the Ethernet controller, but not labeled as such. It may be called “Unknown Device” or “Network Controller.” If such a device exists, you can usually right-click on that device and click Update Driver, and the problem will resolve itself from there.

If there is nothing at all indicating the existence of the Ethernet device, then the device may have been disabled in the BIOS. If you have recently made changes in the BIOS, then this would be worth checking. It’s usually a reasonably obvious setting, such as “Enable onboard LAN” that has been unchecked. If you have not changed anything in the BIOS, check with your machine or mainboard manufacturer to make sure that you are using the most up to date version of the BIOS available.

If your machine cannot access the Internet, you may need to use removable media, such as a USB thumb drive, to transfer the indicated files to the affected machine.

If you have ruled out the above, you may be able to uninstall and reinstall the drivers for the device by following these steps:

1. Download the latest Killer Control Center installer.
   Windows 10 1803+, Killer E3100, Killer E3000, Killer E2600, Killer E2500, Killer E2400, Killer E2200, Killer Wi-Fi 6 AX1650, Killer Wi-Fi 6 AX500, Killer Wireless-AC 1550, Killer Wireless-AC 1535, Killer Wireless-AC 1435, Killer Wireless-AC 1525

   Version: 2.3.1489 Release Date: August 17, 2020 Supported OS: Windows 10 1803+
2. Right-click Start and click Apps and Features
3. Find any “Killer” entry and uninstall it, including “Killer Drivers” or “Killer Performance Suite” or any variation.
4. Restart the machine by clicking Start > Power > Restart
5. Once the computer has booted back up, right-click start and click Device Manager
6. Click View and click Show hidden devices
7. Hopefully, the missing adapter will show up, albeit grayed out. Right click on it, and click Uninstall Device.
8. Check the box for Delete the driver software for this device, if it exists, then click Uninstall.
9. Click the light blue Scan for hardware changes icon at the top of Device Manager.
10. If the adapter reappears, close the Device Manager and run the installer for the latest Killer Control Center. If it does not, restart the computer.

If the adapter still does not appear, then try updating all of the drivers available from your mainboard or machine manufacturer. The chipset driver is especially important. Uninstalling the most recent Windows Updates may also help, especially if you first noticed the issue after a Windows Update. Sometimes, uninstalling and reinstalling the Windows Update in question will result in a more successful outcome, with a working Ethernet adapter.

If none of the above does the trick, you may need to discharge the machine to reset the CMOS and force it to re-enumerate its devices. Click here for our guide on discharging your computer to clear the CMOS.