Those that bought pirated copy unknowingly follow these steps to remove this black screen and the notification.

Well for you that bought pirated copy unknowingly follow these steps to remove this black screen and the notification.

Firstly, you have to terminate the process form running on your computer secondly you have to change the name of the files that are running the process. Then change your desktop back to what you where using before.

Right click on your task bar, click on task manager, click process tab look for the process with the name “wgatray.exe” right click on it and click end process tree, a warning message will appear click yes, the process will be terminated.
Secondly double click on my computer, double click drive C: double click windows folder, double click system 32 folder, look for two files, “wgatray.exe”. When you locate the file, right click on the file and rename them to whatever you want.
Then restart your computer. Your computer should be in good state now.

Note: After removing the notification simply change you desktop wallpaper again.