windows xp 

• Click on Start
• Find and Click “Run”
• Type regedit
• Click the plus next to “HKEY_LOCAL_MACHINE”
• Click the plus next to “SOFTWARE”
• Click the plus next to “Microsoft”
• Click the plus next to “Windows NT”
• Click the plus next to “CurrentVersion”
• Click “WPAEvents”
• On the right panel, find “OOBETimer” then double click it.
• Now, Delete all the Values by highlighting it, then delete it
• Then type in this value without the quotation mark “FF D5 71 D6 8B 6A 8D 6F D5 33 93 FD”
• Then after that click OK,
• Then on the left panel right click WPAEvents, then click on permissions
• Then click System or SYSTEM, then Deny Full Control, then Click OK.
• Then Exit Registry Editor by Click the X or the red X on the Upper Right of the Title Bar or press ALT and F4 at the same time.
• To Very that it works, go to start, then “activate windows”, or go to start, then all programs, then “activate windows”
• If it says that Windows has been activated.
  You will get your windows activated.
  
  
  

  Windows 7 activator

  and

  Windows vista activator