While logn to your machine it comes a pop up window indicating you to 'Resolve now' or 'Get Genuine' and wait for 5 seconds.
After logon to your system you get "You may be a victim of software counterfeiting' message on the bottom right corner of log-in screen.
Along with randomly appeared as balloon notification message with an icon in the notification area (system tray) you got other changes like you background became black.
In this post I will provide several solutions so that we may get rid of WGA notifications.
1.Open task manager window, You can do it by pressing Ctrl+Alt+Del or right click on taskbar and then select Task Manager.
2.On the Task Manager pop up window under processes tab find wgatray.exe process and then right click and select End process tree option and then select yes.
3.Restart Windows XP in Safe Mode.
4.Delete WgaTray.exe file from c:\Windows\System32.
5.Delete WgaTray.exe file from c:\Windows\System32\dllcache.
6.Click on Start menu and write regedit.
7.Browse to the location,
and then delete the folder 'WgaLogon' and all its contents
8.Restart Windows XP.
This one is very easy method and works perfectly.
1.Rename the file 'WgaLogon.dll' and 'WgaTray.exe' in C:\WINDOWS\system32 folder.
2.Open Task Manager and then kill WgaTray.exe process.
3.Reboot your computer.
If you have turned on system restore feature then do a system Restore to restore the PC to a previous restore point or to a previous time where the WGA Notifications hasn’t kicked in. To use System Restore, go to Start -> All Programs -> Accessories -> System Tools -> System Restore.