This problem should easily be solved by re-enabling the service to do this follow these steps:
1. Press the Windows + R keys at the same time, then type services.msc and hit OK
2. Now locate System event notification service and double-click it.
3. Make sure the blue boxes match your settings, Startup Type should be set to Automatic and the Service should be running.
![system event notification service](http://windowsinstructed.com.www603.your-server.de.www603.your-server.de/wp-content/uploads/2014/08/2014-08-13_22-34-32-300x193.png)
4. Change the settings to match the image and then click OK. Reboot your system
Look if the problem has gone away, if it has not then please click below on I need more help and we will help you further.