Windows Booting very slow after 2004 update ,

@GeorgeCB10 - if you cannot see the Windows Media Player Network Service in the list, don't worry about it. That and Media Streaming is only useful to you if you need to "cast to" (a right-click option for Music files like MP3, AAC etc and Video files) to "push" the digital stream over your home network to a TV or DLNA network-aware music player or smart amplifier/receiver in another room.  Here is a graphic below, of what comes up if you search in settings using the search term "media" from the All Settings (from the notification box bottom right, an select "Media Streaming Options"). Mine was NOT on because I had turned off the Windows Search service, and it depends on it, and as I rarely have a need for using "Cast To", I left it that way. You will not be able to start Media Streaming until the Windows Search service is enabled (Automatic) and started.  Note that it is located in the Control Panel group of settings, under Network & Sharing Centre, but not everyone has the Control Panel icon on the desktop, so I mentioned the "easy" way of getting to it.

I have the same issue, i had to restore my computer to before the update because was awful the performance of my pc and i'm afraid to update my laptop which i use to work

Thank you.  It worked, but the scan didn't find anything.

No, CTRL+SHIFT+ENTER will not work. The easy way to get CMD (or powershell, gives same result for doing commands), is to press the Windows key on the keyboard, then while holding it, quickly press the X key, let go both then press the A key. This will open a UAC (is is ok to proceed) window, just asking if Administrator mode is OK, click the YES box. You should then get either a Command Prompt (black window), or a Blue window, that is Powershell (it depends on how your system was configured), then key in your sfc  /scannow command (note the space needed between the sfc command and the qualifyer, that is needed, or it will not recognise it as a proper command).

When it is all completed (may take a while, so don't think it has hung at 66% and 86% or so, give it time to finish). If it asks for the PC to be retarted, do that, but if not and it DOES fix something, reboot anyway. Note that the command exit will close the cmd or Powershell window.

Hello, John

My computer has become insanely slow since the last update (Version 2004).  I followed your instructions as far as entering sfc/scannow at the command prompt, but my computer says I am not an administrator, even though I did CTRL+SHIFT+ENTER like you said, and my user profile also says I am an administrator.  I am the only person who uses this computer, so no one else could possibly be an administrator.   Do you have any idea what the problem might be?  Thank you very much.

Nikki