How to activate windows or office permanently for free?

 Run the following command over Powershell. Follow the instructions and get your windows or office activated lifetime at no cost.

irm https://get.activated.win | iex

It can activate most flavors of windows or office.

How to view all installed applications on your computer?

Run the "shell:AppsFolder" command.

It is a command-line that opens a folder containing all the applications installed on your system, including traditional desktop applications and Universal Windows Platform (UWP) apps downloaded from the Microsoft Store. 

Get details (kundli) of your RAM

Run the following command over Windows Terminal:

wmic MemoryChip get BankLabel, Capacity, DeviceLocator, Manufacturer, MemoryType, PartNumber, SerialNumber, Speed

How to Check Your PC Performance Score in Windows?

Run the command over Powershell :

Get-CimInstance Win32_WinSAT

or

wmiobject win32_winsat

A higher "Windows Experience Index (WEI)" score (usually, 7–9.9) indicates a healthy device/component(s).

A "Good WEI Score" depends on your intended use. For basic office work and web browsing, scores above 5.0 are sufficient. For professional applications like video editing, graphic design, or data analysis, you’ll want scores of 8.0 or higher.