Weird windows messages

This morning, I turned my computer on, and after putting my password, I noticed that it took a lot of time to load. When it finished for the desktop to appear, there was no desktop and it was like a windows 98 interface and got the following message:
Location is not available
C:\windows\system32\config\systemprofile\desktop refers to a location that is unavailable. It could be on a hard drive on this computer or on a network. Check to make sure that the disk is properly inserted, or that you are connected to the internet or your network, and the try again. If it still cannot be located, the information might have been moved to a different location.
I could not restart or turn off so I manually shut it down. Upon restart, I got the windows 7 interface back but I received a pop-up:
Failed to connect to a windows service
Windows could not connect to the System Event Notification Service service. This problem prevent standard users from logging to the system. As an administrator user, you can review the System Event Log for details about why the service didn't respond.
I did not know what to do. So I restarted and I did not receive any messages again. Can someone help me please and tell me what it can be. I don't understand. Thank you

 

Greetings, lazarro...

From what I can ascertain, this is a rather strange problem with no apparent single culprit. If the symptoms do not re-occur, then you'll probably be alright.

If the symptoms persist, however, I advise first trying a clean boot to see if some 3rd-party software is the source of the problem.