An easy and simple way to remove windows genuine notification:
First restart the computer and Login in save mode
Run “system32″ .
Delete the file “WgaTray.exe” from c:\Windows\System32\
Delete the file “WgaLogon.dll” from c:\Windows\System32\
Delete WgaTray.exe from c:\Windows\System32\dllcache
Delete the file “WgaTray.exe” from c:\Windows\System32\
Delete the file “WgaLogon.dll” from c:\Windows\System32\
Delete WgaTray.exe from c:\Windows\System32\dllcache