Boot into "Safe Mode". To do this, turn the laptop on and press F8 as it is booting up. Go into "Safe Mode" by choosing the "Safe Mode" option.
Once you are at the desktop in "Safe Mode", Click "Start" then click "Run".
At the run command prompt type the following EXACTLY
rundll32.exe syssetup,SetupOobeBnk
*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.
Click OK
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