Power Service Defaults in Windows 8

Manages power policy and power policy notification delivery.

Default Settings

Startup type:Automatic
Display name:Power
Service name:Power
Service type:share
Error control:normal
Group:Plugplay
Object:LocalSystem
Path:%SystemRoot%\system32\svchost.exe -k DcomLaunch
File:%SystemRoot%\system32\umpo.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Power
Privileges:
  • SeTcbPrivilege
  • SeSecurityPrivilege
  • SeAssignPrimaryTokenPrivilege
  • SeTakeOwnershipPrivilege
  • SeLoadDriverPrivilege
  • SeBackupPrivilege
  • SeRestorePrivilege
  • SeImpersonatePrivilege
  • SeAuditPrivilege
  • SeChangeNotifyPrivilege
  • SeUndockPrivilege
  • SeDebugPrivilege

Default Behavior

Power is a Win32 service. In Windows 8 it is starting automatically during the operating system startup. Then the Power service runs as LocalSystem in a process of svchost.exe, sharing it with other services. If Power fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the Power service hasn't been started.

Restore Default Startup Configuration for Power

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config Power start= auto
sc start Power

3. Close the command window and restart the computer.

The Power service is using the umpo.dll file that is located in the %WinDir%\system32 folder. If the file is corrupted or deleted, you can put it back in there.