PowerShell is a command-line shell and scripting language, built on the .NET Framework, designed for system administration, IT professionals, and developers.
How to start or run PowerShell
How to open an elevated PowerShell prompt
To open an elevated PowerShell prompt, in the taskbar search, type powershell. Now see the result Windows PowerShell which appears on the top. Right-click on it and select Run as Administrator. The UAC prompt will ask you for your consent. Click yes, and the prompt will open. An elevated PowerShell prompt will display Administrator: Windows PowerShell on the top in the prompt’s border. This post will show you how to always run PowerShell as Administrator.
NOTES: You can then go on to repair the Repair Windows System Image, re-register Windows Store apps, etc. Bonus tip: Learn how to find out Which version of PowerShell you are running?