How To Activate Windows 10 Using Cmd | Activate Windows 10 Without Any Software
Download the file for video Download File
STEPS to Activate your windows Using Command Prompt
STEP 1:- Start the command prompt with Run as administrator.

STEP 2:- Download the file from here Download File choose the key based on your version.

To find which vesion of windows you are using, type setting in search bar and go to about section

STEP 3:- copy Paste the following code based on version
cscript slmgr.vbs /ipk "Product Key According To Your Edition"

STEP 4:- Copy paste the following code and hit enter.
cscript slmgr.vbs /skms kms.lotro.cc
STEP 5:- Copy paste the following code and hit enter.
cscript slmgr.vbs /ato
Voilla!!! You have sucessfully activated your windows . Check video version if you have any confusion.