This copy of Windows must be activated before you can log on
Every time you try to logon you get the following error message.
This copy of Windows must be activated with Microsoft before you can log on. Do you want to activate Windows now?
How to Resolve
Boot into “Safe Mode“. To do this, turn the computer or laptop on and press F8 repeatedly as it is booting up.
Once you are at the desktop in “Safe Mode“, Click “Start” then click “Run“.
At the run command prompt type
*NOTE: The “Oo”‘s in Oobe are “oh’s” – not “zero’s” There is one space after rundll32.exe. It is case sensitive as far as I know.
Wait a few seconds – the screen may blip a few times or so.
This just reset Windows Activation for 30 days.
Reboot the PC into normal mode – log in – re-activate Windows