Hidden Window and Fire Wall not working

Hello Sandra. Sorry to hear about the inconvenience caused. I would request you to check out this Microsoft article https://support.microsoft.com/en-us/kb/833509 to resolve the issue with Hidden windows on shutdown. And I request you to check your audio device drivers, windows audio service is enabled or not.

I've noticed that when I've signed off something called Hidden Window has to shut off before the computer or you can just shut it off.  Is it malware?
Also my Fire Wall is not working, it says that that the proper software is not there or something like that.
Something shut off my sound on my computer and I can not get it turned back on also something changed my default printer to something else, but I"ve fixed that.  Help please.

Hello Sandra. Sorry to hear about the inconvenience caused. I would request you to check out this Microsoft article https://support.microsoft.com/en-us/kb/833509 to resolve the issue with Hidden windows on shutdown. And I request you to check your audio device drivers, windows audio service is enabled or not.