Follow the Steps:

Command prompt (CMD)  run as Administrator:

Copy & Paste below codes to command prompt

Step-1 Code
cscript slmgr.vbs /ipk W269N-WFGWX-YVC9B-4J6C9-T83GX
press enter

Step-2 Code
cscript slmgr.vbs /skms kms.lotro.cc
press enter

Step-3 Code
cscript slmgr.vbs /ato
Press Enter

You are Done!!
Your Windows is now Activated!!